{"title":"DSS Racing Pistons for Jeep Wrangler HEMI","description":"\u003cp\u003eUpgrade Your Jeep Wrangler HEMI with DSS Racing Pistons\u003c\/p\u003e\n\u003cp\u003eOur collection of DSS Racing pistons is built specifically for your Jeep Wrangler HEMI, offering superior strength and performance. Designed to withstand high horsepower and boost levels, these pistons help improve engine response, power output, and overall reliability. Whether you're building a high-performance street machine or a rugged off-road rig, our pistons are engineered to meet demanding conditions and deliver consistent results.\u003c\/p\u003e\n\u003cp\u003eIn this category, you'll find a range of aftermarket pistons crafted for optimal fitment and durability. These components are ideal for enthusiasts seeking to enhance their vehicle's power, response, and longevity. Proper internals like pistons are key to maximizing your engine's potential while maintaining reliability under boost or aggressive driving.\u003c\/p\u003e\n\u003cp\u003eShop performance pistons for your Jeep Wrangler HEMI at FastHemis.\u003c\/p\u003e","products":[{"product_id":"6847-4125-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series +4cc Dome Top Forged Piston Set 4.125\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6847-4125C \/ 2-6847-4125C \/ 3-6847-4125C \/ K1-6847-4125C \/ K2-6847-4125C \/ K3-6847-4125C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series +4cc Dome Top Forged Piston Set is engineered specifically for the 6.4L 392 HEMI engines found in Chrysler, Dodge, Jeep, and Ram vehicles. Designed to enhance performance and durability, these pistons are ideal for enthusiasts looking to upgrade their engine’s strength and efficiency. Featuring a +4cc dome top design, these pistons help optimize compression ratios for improved combustion and power delivery.\u003c\/p\u003e\u003cp\u003eBuilt to meet the demands of high-performance applications, this piston set is perfect for street performance, racing, or heavy-duty use. Whether you are rebuilding your 6.4L HEMI or seeking a reliable upgrade, DSS Racing’s FX Series pistons offer a precision fit and robust construction to support your engine’s potential.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced design elements and materials to ensure maximum reliability and performance:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e+4cc dome top design to increase compression and improve combustion efficiency\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.125\" bore size for precise fitment in 6.4L 392 HEMI engines\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and resistance to high stress\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm\/1.2mm\/3mm to accommodate high-performance piston rings\u003c\/li\u003e\n\u003cli\u003eDesigned for a 3.720\" stroke and 6.2\" connecting rods, matching factory specifications\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dome volumes (65cc, 74cc, 85cc) to tailor compression ratios from approximately 12.68:1 to 10.08:1\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" for optimal piston-to-head clearance and combustion chamber compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, providing an excellent balance of lightweight strength and thermal conductivity. The forging process enhances the metal’s grain structure, resulting in pistons that withstand extreme combustion pressures and temperatures without deformation.\u003c\/p\u003e\u003cp\u003eThe dome top design increases the piston’s compression volume, allowing for improved power output while maintaining engine reliability. Precision machining ensures tight tolerances for bore size, pin fitment, and ring grooves, guaranteeing smooth operation and reduced friction within the cylinder bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed as direct replacements for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines with a 4.125\" bore. Installation requires standard engine rebuild procedures, including proper ring end gap setting and piston pin installation. Depending on your engine build, you can select either full-floating or press-fit wrist pins to match your application.\u003c\/p\u003e\u003cp\u003eDue to the +4cc dome volume, it is important to verify piston-to-valve clearance and compression ratio compatibility with your cylinder heads and camshaft setup. Professional installation is recommended to ensure optimal engine performance and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons with +4cc dome tops (quantity as per kit selection)\u003c\/li\u003e\n\u003cli\u003eWrist pins (full-floating or press-fit depending on chosen option)\u003c\/li\u003e\n\u003cli\u003ePiston rings compatible with 1.2\/1.2\/3mm groove dimensions (may be sold separately)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for automotive enthusiasts and professional builders upgrading or rebuilding 6.4L 392 HEMI engines seeking enhanced durability and performance. It suits street performance vehicles, drag racing, road racing, and other high-stress applications where forged components are essential for reliability and power gains.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381002649812,"sku":"1-6847-4125C","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381002682580,"sku":"2-6847-4125C","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381002715348,"sku":"3-6847-4125C","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381002748116,"sku":"K1-6847-4125C","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381002780884,"sku":"K2-6847-4125C","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381002813652,"sku":"K3-6847-4125C","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002123_4_9d1e67f5-11e6-4b4c-95f6-b25d84045461.webp?v=1771667025"},{"product_id":"6847-4100-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-100-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series +4cc Dome Top Forged Piston Set 4.100\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series +4cc Dome Top Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6847-4100C \/ 2-6847-4100C \/ 3-6847-4100C \/ K1-6847-4100C \/ K2-6847-4100C \/ K3-6847-4100C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series +4cc Dome Top Forged Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.4L 392 HEMI engine. Designed to replace factory pistons, this set offers enhanced durability and improved combustion efficiency, making it an ideal upgrade for enthusiasts seeking to boost engine power and reliability.\u003c\/p\u003e\u003cp\u003eThese pistons are crafted to accommodate the 393 Small Block Mopar HEMI Gen III platform, featuring a +4cc dome top design that optimizes compression ratios for increased performance. Whether you are building a street performance engine or a race-ready powerplant, these pistons provide the strength and precision required for demanding conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt with advanced engineering and precision manufacturing, the DSS Racing FX Series pistons deliver superior performance and reliability. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for maximum strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003e+4cc dome top design to increase compression and improve combustion efficiency\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.100\" bore size, fitting most 6.4L 392 HEMI engines\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm\/1.2mm\/3mm for optimal ring sealing\u003c\/li\u003e\n\u003cli\u003eDesigned for a 3.720\" stroke and 6.2\" connecting rods, matching factory specifications\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression ratio options: 65cc dome (12.56:1), 74cc dome (11.23:1), and 85cc dome (9.98:1)\u003c\/li\u003e\n\u003cli\u003ePrecision machined for consistent fitment and performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are forged from high-grade aluminum alloy, providing an excellent balance of lightweight construction and exceptional strength. The forging process enhances grain structure, resulting in pistons that resist cracking and deformation under extreme heat and pressure.\u003c\/p\u003e\u003cp\u003eThe dome top design increases the combustion chamber volume, allowing for higher compression ratios that translate into improved power output and throttle response. Each piston is meticulously machined to tight tolerances, ensuring optimal ring sealing and minimal friction for enhanced engine efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct fit for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, making installation straightforward for experienced engine builders and professional shops. Depending on your engine build, you may choose between full-floating or press-fit wrist pins to suit your performance needs.\u003c\/p\u003e\u003cp\u003eProper ring end gap and clearance checks are recommended during installation to ensure optimal performance and longevity. These pistons are compatible with standard 3.720\" stroke crankshafts and 6.2\" connecting rods, matching factory dimensions for seamless integration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged +4cc dome top pistons (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eWrist pins (.927\" diameter) with options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings with 1.2\/1.2\/3mm groove dimensions\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers who demand increased power and durability from their 6.4L 392 HEMI engines. Whether upgrading a street machine, building a drag racing engine, or enhancing off-road performance, these pistons provide a reliable foundation for high-output builds.\u003c\/p\u003e\u003cp\u003eThey are especially suited for applications requiring higher compression ratios and improved combustion efficiency without compromising engine longevity.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381003632852,"sku":"1-6847-4100C","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381003665620,"sku":"2-6847-4100C","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381003698388,"sku":"3-6847-4100C","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381003731156,"sku":"K1-6847-4100C","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381003763924,"sku":"K2-6847-4100C","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381003796692,"sku":"K3-6847-4100C","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002119_4_24e6c0a1-c8d1-43a0-87bd-d0538b583e1e.webp?v=1771667024"},{"product_id":"6847-4090-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Pistons Set: Fits Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6847-4090C \/ 2-6847-4090C \/ 3-6847-4090C \/ K1-6847-4090C \/ K2-6847-4090C \/ K3-6847-4090C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines. Designed to fit most 6.4L 392 models, these pistons are crafted to deliver superior strength, durability, and performance for high-output small block Mopar HEMI Gen III engines. Whether you are building a high-performance street machine or a race-ready engine, these forged pistons provide the reliability and precision needed to handle increased power and boost levels.\u003c\/p\u003e\u003cp\u003eWith a bore size of 4.090 inches and a compression height of 1.21 inches, this piston set features a +4cc dome top design that optimizes combustion chamber volume and compression ratio. The pistons are compatible with full-floating or press-fit wrist pins, allowing for flexible installation options based on your engine build preferences.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing forged pistons incorporate advanced design elements and materials to ensure maximum performance and longevity:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for enhanced strength and resistance to high stress\u003c\/li\u003e\n\u003cli\u003e+4cc dome top design to optimize combustion efficiency and compression ratios\u003c\/li\u003e\n\u003cli\u003eCompatible with full-floating or press-fit wrist pins (.927\" pin diameter)\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring for effective sealing\u003c\/li\u003e\n\u003cli\u003eDesigned for 3.720\" stroke and 6.2\" connecting rods, matching factory specifications\u003c\/li\u003e\n\u003cli\u003eAvailable compression ratios approximately 12.5:1 (65cc), 11.18:1 (74cc), and 9.94:1 (85cc) depending on dome volume\u003c\/li\u003e\n\u003cli\u003ePrecision machining ensures tight tolerances and consistent performance\u003c\/li\u003e\n\u003cli\u003eIdeal for high-performance builds requiring durability under increased cylinder pressures\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are forged from premium-grade aluminum alloy, providing an excellent balance of lightweight construction and high tensile strength. The forging process refines the metal grain structure, resulting in pistons that resist cracking, scuffing, and thermal fatigue even under extreme operating conditions.\u003c\/p\u003e\u003cp\u003eThe dome top design with a +4cc volume enhances combustion chamber dynamics, improving power output and throttle response. The pistons feature carefully engineered ring grooves that accommodate high-performance piston rings, ensuring optimal sealing and oil control. The wrist pin bore is precision-machined to accept either full-floating or press-fit pins, offering versatility for various engine assembly methods.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, making it a direct replacement for factory pistons in these applications. Installation requires standard engine assembly procedures, and the pistons are compatible with the factory stroke of 3.720 inches and 6.2-inch connecting rods. Depending on your build, you may need to verify clearances and ring end gaps to ensure proper fitment and performance.\u003c\/p\u003e\u003cp\u003eThese pistons are suitable for both rebuilds and performance upgrades, providing a reliable foundation for increased horsepower and torque without compromising engine longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of four DSS Racing FX Series forged pistons (4.090\" bore)\u003c\/li\u003e\n\u003cli\u003eCompatible with full-floating or press-fit wrist pins (pins not included)\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves for 1.2\/1.2\/3mm piston rings (rings not included)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for automotive enthusiasts, engine builders, and professional racers who demand durable, high-performance components for their 6.4L 392 HEMI engines. Whether upgrading a street vehicle for improved power delivery or building a race engine capable of handling high boost and RPM, these forged pistons provide the strength and reliability necessary for serious performance applications.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381004124372,"sku":"1-6847-4090C","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381004157140,"sku":"2-6847-4090C","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381004189908,"sku":"3-6847-4090C","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381004222676,"sku":"K1-6847-4090C","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381004255444,"sku":"K2-6847-4090C","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381004288212,"sku":"K3-6847-4090C","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002117_4_df5575f3-00a5-4185-b144-2c867d33e21c.webp?v=1771667023"},{"product_id":"6847-4085-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-085-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series +4cc Dome Top Forged Piston Set 6.4L 392 Gen III Hemi Engines (K3-6847-4085C)","description":"\u003ch3\u003eDSS Racing FX Series +4cc Dome Top Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Gen III Hemi Engines\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6847-4085C \/ 2-6847-4085C \/ 3-6847-4085C \/ K1-6847-4085C \/ K2-6847-4085C \/ K3-6847-4085C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series +4cc Dome Top Forged Piston Set is engineered specifically for Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines. Designed to enhance performance and durability, these pistons are ideal for enthusiasts and professional builders seeking reliable, high-quality components for their small block Mopar Hemi builds. Featuring a +4cc dome top design, these pistons help optimize compression ratios for improved combustion efficiency and power delivery.\u003c\/p\u003e\u003cp\u003eWhether you are upgrading your engine for street performance, racing, or heavy-duty applications, the DSS Racing FX Series pistons offer a precise fit and robust construction to withstand demanding conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced design elements to maximize engine performance and longevity:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 6.4L 392 Gen III Hemi engines from Chrysler, Dodge, Jeep, and Ram\u003c\/li\u003e\n\u003cli\u003e+4cc dome top design to increase compression and improve power output\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21 inches for optimal piston-to-head clearance\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927 inches, available in full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring for effective sealing\u003c\/li\u003e\n\u003cli\u003eStroke length of 3.720 inches matched with a 6.2-inch connecting rod for balanced performance\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression ratios to suit different combustion chamber volumes: 65cc (12.47:1), 74cc (11.16:1), and 85cc (9.91:1)\u003c\/li\u003e\n\u003cli\u003eDesigned for 390 Small Block Mopar Hemi Gen III applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the DSS Racing FX Series is forged from premium-grade aluminum alloy, providing exceptional strength-to-weight ratio and thermal conductivity. The dome top shape is precision-machined to exact specifications, ensuring consistent combustion chamber volume and reliable compression ratios. The pistons feature carefully engineered ring grooves to accommodate high-performance piston rings, enhancing sealing and reducing blow-by.\u003c\/p\u003e\u003cp\u003eThe pin bore is designed to accept either full-floating or press-fit wrist pins, allowing flexibility based on engine build preferences. The combination of a 3.720-inch stroke and 6.2-inch connecting rods ensures optimal piston speed and mechanical efficiency within the 6.4L 392 Hemi platform.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are direct replacements for the 6.4L 392 Gen III Hemi engines found in Chrysler, Dodge, Jeep, and Ram vehicles. Installation requires standard engine assembly procedures and may necessitate matching the piston compression height to the cylinder head combustion chamber volume to achieve the desired compression ratio. No major modifications are typically needed when upgrading from factory pistons, but professional installation is recommended to ensure proper ring end gap and piston-to-wall clearance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged +4cc dome top pistons (quantity as required for engine configuration)\u003c\/li\u003e\n\u003cli\u003eWrist pin options: full-floating or press-fit (depending on selected SKU)\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for ring groove dimensions and piston geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram 6.4L 392 Gen III Hemi engines. It suits applications ranging from street performance to competitive racing where increased compression and durability are critical. The multiple compression ratio options allow customization to match fuel type, tuning, and intended use.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381005336788,"sku":"1-6847-4085C","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381005369556,"sku":"2-6847-4085C","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381005402324,"sku":"3-6847-4085C","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381005435092,"sku":"K1-6847-4085C","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381005467860,"sku":"K2-6847-4085C","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381005500628,"sku":"K3-6847-4085C","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002116_4_7c24ecc8-4342-4ba1-a8de-4b1b826c501b.webp?v=1771667022"},{"product_id":"6847-4075-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-075-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series +4cc Dome Top Forged Piston Set 6.4L 392 Gen III Hemi Engines","description":"\u003ch3\u003eDSS Racing FX Series +4cc Dome Top Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Gen III Hemi Engines\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6847-4075C \/ 2-6847-4075C \/ 3-6847-4075C \/ K1-6847-4075C \/ K2-6847-4075C \/ K3-6847-4075C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series +4cc Dome Top Forged Piston Set is engineered specifically for Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines. Designed to enhance performance and reliability, these pistons are ideal for enthusiasts and builders seeking to maximize power output while maintaining durability under high-stress conditions. Featuring a +4cc dome top design, these pistons increase compression ratios and optimize combustion efficiency for improved engine response.\u003c\/p\u003e\u003cp\u003eWhether you are building a high-performance street machine or a race-ready engine, DSS Racing’s forged pistons provide the strength and precision needed to handle increased boost, higher RPMs, and aggressive tuning strategies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons incorporate advanced engineering and materials to deliver superior performance and longevity. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e+4cc dome top design to increase compression and power potential\u003c\/li\u003e\n\u003cli\u003eForged construction for exceptional strength and durability\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" for optimal piston-to-head clearance\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" compatible with full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm for reliable sealing and reduced friction\u003c\/li\u003e\n\u003cli\u003eDesigned for 3.720\" stroke and 6.2\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios from 9.88:1 to 12.44:1\u003c\/li\u003e\n\u003cli\u003ePrecision CNC machining ensures tight tolerances and consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDSS Racing FX Series pistons are crafted from high-quality forged aluminum alloy, providing an excellent strength-to-weight ratio essential for high-performance applications. The forging process enhances the metal’s grain structure, resulting in pistons that resist cracking, scuffing, and thermal fatigue even under extreme operating conditions.\u003c\/p\u003e\u003cp\u003eThe dome top design not only increases compression but also promotes efficient combustion chamber dynamics, improving throttle response and power delivery. The pistons feature carefully engineered ring grooves and pin bosses to maintain ring seal integrity and reduce wear, contributing to longer engine life and consistent performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed as direct replacements for Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines, ensuring straightforward installation with minimal modifications. Compatibility with both full-floating and press-fit wrist pins allows flexibility depending on your engine build preferences. Proper ring end gap and piston-to-wall clearance should be verified during installation to achieve optimal performance and reliability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged +4cc dome top pistons (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eWrist pins compatible with full-floating or press-fit setups\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for ring groove dimensions and piston geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance engine builders, professional tuners, and enthusiasts upgrading their 6.4L 392 Gen III Hemi engines. It suits applications ranging from street performance and drag racing to road course and off-road builds where increased compression and durability are critical. The multiple combustion chamber volume options allow customization of compression ratios to match fuel types and tuning goals.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381005533396,"sku":"1-6847-4075C","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381005566164,"sku":"2-6847-4075C","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381005598932,"sku":"3-6847-4075C","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381005631700,"sku":"K1-6847-4075C","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381005664468,"sku":"K2-6847-4075C","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381005697236,"sku":"K3-6847-4075C","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002111_4_b3996b2b-f10a-4272-805c-f608293de42d.webp?v=1771667020"},{"product_id":"6847-4055-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-055-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.055\" Bore: Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 (All)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6847-4055C \/ 2-6847-4055C \/ 3-6847-4055C \/ K1-6847-4055C \/ K2-6847-4055C \/ K3-6847-4055C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, delivering exceptional strength and durability for high-performance applications. Designed to fit most 6.4L 392 models, these pistons are ideal for enthusiasts and professional builders seeking reliable, precision components to handle increased power and demanding conditions.\u003c\/p\u003e\u003cp\u003eBuilt to withstand the rigors of boosted, nitrous, or naturally aspirated setups, the FX Series pistons offer a perfect balance of lightweight construction and robust design. Their forged construction ensures superior resistance to heat and stress, making them a trusted upgrade for serious Mopar HEMI builds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons incorporate advanced design elements and manufacturing techniques to optimize engine performance and longevity:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 384 Small Block Mopar HEMI Gen III engines\u003c\/li\u003e\n\u003cli\u003e4.055\" bore size tailored for 6.4L 392 applications\u003c\/li\u003e\n\u003cli\u003eCompression height of 1.21\" for precise piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003e+4cc dome top design to enhance combustion efficiency\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring groove\u003c\/li\u003e\n\u003cli\u003eStroke compatibility: 3.720\" stroke engines\u003c\/li\u003e\n\u003cli\u003eConnecting rod length: 6.2\" for optimal piston travel and rod ratio\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dome volumes to adjust compression ratio: 65cc (12.32:1), 74cc (11.02:1), and 85cc (9.79:1)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FX Series pistons are forged from premium-grade aluminum alloy, providing a lightweight yet incredibly strong foundation to endure high cylinder pressures and temperatures. The forging process enhances grain structure and mechanical properties, resulting in pistons that resist cracking, scuffing, and deformation under extreme conditions.\u003c\/p\u003e\u003cp\u003eEach piston features a precision-machined dome top with a +4cc volume to optimize combustion chamber shape and improve power output. The ring grooves are carefully cut to accommodate high-performance piston rings, ensuring excellent sealing and oil control. The wrist pin bore is engineered for either full-floating or press-fit installation, offering flexibility depending on engine build preferences.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDesigned as a direct fit for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, these pistons require minimal modifications for installation. Builders should verify bore size compatibility and select the appropriate dome volume to match their desired compression ratio and fuel type. Proper ring end gap and piston-to-wall clearance should be checked during assembly to ensure optimal performance and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eWrist pins compatible with full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for compression height, dome volume, and ring groove dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is perfect for performance enthusiasts, engine builders, and racers upgrading or rebuilding their 6.4L 392 HEMI engines. Whether building a naturally aspirated powerhouse or a forced induction monster, the DSS Racing FX Series pistons provide the durability and precision needed to maximize power and reliability in street, strip, or track applications.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381006385364,"sku":"1-6847-4055C","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381006418132,"sku":"2-6847-4055C","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381006450900,"sku":"3-6847-4055C","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381006483668,"sku":"K1-6847-4055C","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381006516436,"sku":"K2-6847-4055C","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381006549204,"sku":"K3-6847-4055C","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002109_4_2a3119d2-7c9d-460e-aa84-367ad4289852.webp?v=1771667019"},{"product_id":"6847-4065-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-065-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series +4cc Dome Top Forged Piston Set 6.4L 392 Gen III Hemi Engines (K3-6847-4065C)","description":"\u003ch3\u003eDSS Racing FX Series +4cc Dome Top Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Gen III Hemi Engines\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6847-4065C \/ 2-6847-4065C \/ 3-6847-4065C \/ K1-6847-4065C \/ K2-6847-4065C \/ K3-6847-4065C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series +4cc Dome Top Forged Piston Set is engineered specifically for Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines. Designed to enhance performance and durability, these pistons are ideal for enthusiasts and professional builders seeking to maximize power output while maintaining reliability. Featuring a +4cc dome top design, they provide increased compression ratios suitable for high-performance street and race applications.\u003c\/p\u003e\u003cp\u003eThese pistons are a direct fit for the 386 Small Block Mopar Hemi Gen III platform, offering a comp height of 1.21 inches and a pin diameter of .927 inches. They accommodate either full-floating or press-fit wrist pins, giving flexibility depending on your engine build preferences.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt to meet the demands of high-performance Hemi engines, the DSS Racing FX Series pistons offer a range of advanced features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e+4cc dome top design to increase compression and optimize combustion\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and durability under extreme conditions\u003c\/li\u003e\n\u003cli\u003eCompatible with 1.2\/1.2\/3mm ring groove sizes for reliable sealing and reduced friction\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 3.720 inches and rod length of 6.2 inches for precise engine geometry\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios from approximately 9.84 to 12.38\u003c\/li\u003e\n\u003cli\u003eDesigned for Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Gen III Hemi engines ensuring perfect fitment\u003c\/li\u003e\n\u003cli\u003eOptions for full-floating or press-fit wrist pins to suit different engine assembly methods\u003c\/li\u003e\n\u003cli\u003eOptimized for both street performance and track use with enhanced thermal and mechanical resistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the DSS Racing FX Series is precision forged from high-grade aluminum alloy, delivering an excellent strength-to-weight ratio. The forging process enhances grain structure, resulting in pistons that resist cracking, scuffing, and deformation under high combustion pressures and temperatures. The +4cc dome top shape is CNC-machined to exact specifications, ensuring consistent compression ratios and optimal combustion chamber dynamics.\u003c\/p\u003e\u003cp\u003eThe pistons feature ring grooves sized at 1.2mm for the top and second rings, and 3mm for the oil ring, balancing oil control with minimal friction. The pin bore diameter of .927 inches supports both full-floating and press-fit wrist pin configurations, allowing builders to customize their setup based on performance goals and engine design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct replacement for Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines, making installation straightforward for experienced engine builders. The comp height of 1.21 inches and compatibility with a 3.720-inch stroke crankshaft ensure proper piston-to-valve clearance and ring seal. Depending on your build, you may select either full-floating or press-fit wrist pins to match your connecting rods and assembly preferences.\u003c\/p\u003e\u003cp\u003eProper ring end gap and piston deck clearance should be verified during installation to optimize performance and longevity. These pistons are suitable for both fresh builds and performance upgrades where increased compression and durability are desired.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged +4cc dome top pistons (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eCompatible wrist pins (full-floating or press-fit options depending on SKU)\u003c\/li\u003e\n\u003cli\u003eRing groove machining for 1.2\/1.2\/3mm ring sets\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for compression ratio and fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is perfect for performance enthusiasts, professional engine builders, and racers upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram 6.4L 392 Gen III Hemi engines. Whether you are aiming for higher compression ratios for naturally aspirated builds or preparing the engine for forced induction, these pistons provide the strength and precision needed to handle increased power and stress.\u003c\/p\u003e\u003cp\u003eThey are well-suited for street performance, drag racing, road racing, and other high-demand motorsport applications where reliability and power gains are critical.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381006975188,"sku":"1-6847-4065C","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381007007956,"sku":"2-6847-4065C","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381007040724,"sku":"3-6847-4065C","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381007073492,"sku":"K1-6847-4065C","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381007106260,"sku":"K2-6847-4065C","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381007139028,"sku":"K3-6847-4065C","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002107_4_1f4e89d3-cae7-47a3-87df-92096a40c90d.webp?v=1771667018"},{"product_id":"6845-4125-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.125\" Bore: Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 (All)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6845-4125C \/ 2-6845-4125C \/ 3-6845-4125C \/ K1-6845-4125C \/ K2-6845-4125C \/ K3-6845-4125C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines. Designed to fit most 6.4L 392 models, these pistons offer a reliable upgrade for enthusiasts seeking enhanced durability and performance. Crafted to meet the demanding conditions of high-performance and street applications, this piston set provides improved strength and thermal resistance compared to stock cast pistons.\u003c\/p\u003e\u003cp\u003eIdeal for builders and tuners working on the 398 Small Block Mopar HEMI Gen III platform, these pistons accommodate a 4.125\" bore and are optimized for a 3.720\" stroke with a 6.2\" rod length. Whether you are rebuilding or upgrading your engine, the DSS Racing FX Series pistons deliver precision fitment and consistent performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced design elements to ensure durability and efficiency under high-stress conditions. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for superior strength and fatigue resistance\u003c\/li\u003e\n\u003cli\u003eCompensated height of 1.21\" for optimal piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003e18cc dish top design to control compression and support various combustion chamber volumes\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter compatible with full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm top and second rings, with a 3mm oil ring groove for effective sealing\u003c\/li\u003e\n\u003cli\u003eDesigned for a 3.720\" stroke and 6.2\" connecting rods, matching factory and performance builds\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios tailored for different combustion chamber sizes: 65cc (9.88:1), 74cc (9.09:1), and 85cc (8.29:1)\u003c\/li\u003e\n\u003cli\u003ePrecision machining ensures consistent fitment and performance across all pistons in the set\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are forged from high-quality aluminum alloy, providing a lightweight yet robust component capable of withstanding the rigors of high-performance engines. The forging process enhances grain structure and mechanical properties, resulting in pistons that resist cracking and deformation under extreme heat and pressure.\u003c\/p\u003e\u003cp\u003eThe dish-top design with a -18cc volume helps manage compression ratios, making these pistons versatile for various tuning setups. The piston pin bore is engineered to accept either full-floating or press-fit pins, allowing flexibility depending on engine build preferences. Additionally, the ring grooves are precision-cut to accommodate standard ring sizes, ensuring optimal sealing and oil control.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines, specifically the 398 Small Block Mopar HEMI Gen III platform. Installation requires standard engine rebuilding procedures, including proper honing of the cylinder bore to 4.125\" and ensuring compatibility with the 3.720\" stroke crankshaft and 6.2\" connecting rods.\u003c\/p\u003e\u003cp\u003eDue to the precise engineering and OEM-compatible dimensions, these pistons typically install without the need for custom modifications. However, professional installation and careful measurement are recommended to achieve optimal piston-to-wall clearance and ring end gap settings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eComplete set of forged pistons sized for 4.125\" bore\u003c\/li\u003e\n\u003cli\u003eCompatible with full-floating or press-fit wrist pins (pins not included)\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves for standard piston rings\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and professional tuners upgrading or rebuilding Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines. Whether for street performance, track use, or mild racing applications, these forged pistons provide enhanced durability and reliability over stock components.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381007859924,"sku":"1-6845-4125C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381007892692,"sku":"2-6845-4125C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381007925460,"sku":"3-6845-4125C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381007958228,"sku":"K1-6845-4125C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381007990996,"sku":"K2-6845-4125C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381008023764,"sku":"K3-6845-4125C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002102_4_18eef388-7dcb-44a4-bb1e-1a809afdb108.webp?v=1771667016"},{"product_id":"6845-4100-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-100-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.100\" Bore: Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 (All)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6845-4100C \/ 2-6845-4100C \/ 3-6845-4100C \/ K1-6845-4100C \/ K2-6845-4100C \/ K3-6845-4100C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.4L 392 HEMI engine. Designed to fit most 6.4L 392 models, these pistons offer a precise 4.100\" bore size and are built to withstand the rigors of aggressive street driving, track use, and racing environments.\u003c\/p\u003e\u003cp\u003eCrafted for enthusiasts and professional builders alike, this piston set enhances engine durability and reliability while supporting increased power output. The FX Series pistons are an ideal upgrade for those seeking to improve engine efficiency, reduce reciprocating mass, and maintain tight tolerances under high stress.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced design elements and manufacturing techniques to deliver superior performance and longevity:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 393 Small Block Mopar HEMI Gen III engines\u003c\/li\u003e\n\u003cli\u003eCompacted height of 1.21\" for optimized piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003e18cc dish top design to control compression ratio and combustion dynamics\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter available in full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003ePrecision ring grooves sized at 1.2mm (top and second) and 3mm (oil ring) for excellent sealing\u003c\/li\u003e\n\u003cli\u003eStroke length of 3.720\" matched to a 6.2\" connecting rod for balanced performance\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios tailored to combustion chamber volumes: 65cc (9.79), 74cc (9.0), and 85cc (8.21)\u003c\/li\u003e\n\u003cli\u003eForged from high-strength materials to resist heat and mechanical stress\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are forged from premium-grade aluminum alloy, providing an ideal balance of strength, weight, and thermal conductivity. The forging process ensures a dense, uniform grain structure that enhances fatigue resistance and durability under extreme operating conditions.\u003c\/p\u003e\u003cp\u003eEach piston features a carefully engineered dish top with an 18cc volume reduction to optimize combustion chamber shape and reduce detonation risk. The wrist pin bore is precision-machined to accommodate either full-floating or press-fit pins, allowing builders to customize assembly based on application needs. Ring grooves are designed to maintain ring seal integrity while minimizing friction and wear.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed for direct fitment in most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, making it a straightforward upgrade for engine rebuilds or performance enhancements. Installation requires standard machining and assembly procedures consistent with high-performance engine builds. Proper ring end gap and piston-to-wall clearance should be verified during installation to ensure optimal operation and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons with 4.100\" bore size\u003c\/li\u003e\n\u003cli\u003eWrist pin options: full-floating or press-fit\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves ready for standard piston rings\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for compression ratios and piston dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers who demand reliable, high-strength components for their 6.4L 392 HEMI-powered vehicles. Whether upgrading a street machine, preparing a drag or road racing engine, or building a durable daily driver with enhanced power, the DSS Racing FX Series pistons provide the foundation for improved engine performance and longevity.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381008449748,"sku":"1-6845-4100C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381008482516,"sku":"2-6845-4100C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381008515284,"sku":"3-6845-4100C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381008548052,"sku":"K1-6845-4100C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381008580820,"sku":"K2-6845-4100C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381008613588,"sku":"K3-6845-4100C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002099_4_99abf788-4341-49f6-923e-7b445b5676a4.webp?v=1771667015"},{"product_id":"6845-4090-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.090\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6845-4090C \/ 2-6845-4090C \/ 3-6845-4090C \/ K1-6845-4090C \/ K2-6845-4090C \/ K3-6845-4090C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.4L 392 HEMI engine. Designed to fit most 6.4L 392 models, these pistons offer a perfect balance of strength, durability, and precision fitment for enthusiasts and builders looking to upgrade their engine’s bottom end. Whether you are building a street performance engine or a race-ready powerplant, these forged pistons provide the reliability and performance needed to handle increased power and boost levels.\u003c\/p\u003e\u003cp\u003eWith a bore size of 4.090 inches and a compatible stroke of 3.720 inches, this piston set is tailored for the 391 Small Block Mopar HEMI Gen III platform. The pistons feature a compact dish top design with an 18cc dish volume, helping to optimize combustion chamber dynamics and compression ratios for improved power delivery and efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing forged pistons incorporate advanced design elements and manufacturing techniques to ensure superior performance and longevity:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for enhanced strength and durability under high-stress conditions\u003c\/li\u003e\n\u003cli\u003eFX Series design optimized for 6.4L 392 HEMI engines, ensuring precise fit and function\u003c\/li\u003e\n\u003cli\u003e1.21\" compression height for compatibility with stock and aftermarket rods\u003c\/li\u003e\n\u003cli\u003e18cc dish top piston crown to control compression ratio and improve combustion\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter with options for full-floating or press-fit pins\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm top and second rings, 3mm oil ring for effective sealing\u003c\/li\u003e\n\u003cli\u003eCompatible with 6.2\" connecting rods and 3.720\" stroke crankshafts\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes (65cc, 74cc, 85cc) to tailor compression ratios from 9.74:1 down to 8.18:1\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDSS Racing utilizes premium forged aluminum alloys to manufacture the FX Series pistons, delivering a combination of lightweight strength and thermal resistance. The forging process enhances grain structure and mechanical properties, allowing these pistons to withstand the rigors of high RPM and elevated cylinder pressures common in performance and racing engines.\u003c\/p\u003e\u003cp\u003eThe pistons are precision-machined to exacting tolerances, ensuring optimal ring sealing and minimal friction. The dish top design reduces detonation risk by controlling compression, while the ring grooves are engineered to maintain ring stability and oil control under demanding conditions. The wrist pin options provide flexibility for builders preferring either full-floating or press-fit configurations based on their engine setup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed for direct fitment in most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, making it an ideal upgrade for rebuilds or performance builds. Installation requires standard engine assembly procedures, and compatibility with stock or aftermarket connecting rods and crankshafts is ensured by the specified dimensions. Builders should verify clearances and ring end gaps during installation to achieve optimal performance and reliability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons sized for 4.090\" bore\u003c\/li\u003e\n\u003cli\u003eWrist pins (.927\") with options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves for 1.2mm top and second rings, 3mm oil ring\u003c\/li\u003e\n\u003cli\u003eMultiple dish volume options to customize compression ratio\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is perfect for engine builders, performance enthusiasts, and racers upgrading or rebuilding their 6.4L 392 HEMI engines. Whether you are aiming for increased horsepower, improved durability, or enhanced engine response, these pistons provide a reliable foundation for high-performance builds in street, strip, or off-road applications.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381009236180,"sku":"1-6845-4090C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381009268948,"sku":"2-6845-4090C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381009301716,"sku":"3-6845-4090C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381009334484,"sku":"K1-6845-4090C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381009367252,"sku":"K2-6845-4090C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381009400020,"sku":"K3-6845-4090C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002095_4_266a5be4-c113-4923-a4a0-4a887ba27356.webp?v=1771667014"},{"product_id":"6845-4085-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-085-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Pistons Set 4.085\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Pistons\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Gen III Mopar Hemi\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6845-4085C \/ 2-6845-4085C \/ 3-6845-4085C \/ K1-6845-4085C \/ K2-6845-4085C \/ K3-6845-4085C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Pistons are precision-engineered performance components designed specifically for the 6.4L 392 Gen III Mopar Hemi engines found in many Chrysler, Dodge, Jeep, and Ram models. These pistons deliver exceptional strength and durability, making them an ideal upgrade for enthusiasts seeking to enhance engine reliability and power output under demanding conditions.\u003c\/p\u003e\u003cp\u003eCrafted for both street and track applications, these forged pistons offer improved resistance to heat and stress compared to stock cast pistons. Whether you are building a high-performance street machine or a race-ready engine, the DSS Racing FX Series pistons provide the foundation for consistent, reliable performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDesigned with advanced engineering and quality materials, the DSS Racing FX Series Forged Pistons include the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 4.085\" bore size for 6.4L 392 Gen III Mopar Hemi engines\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" for optimal piston-to-head clearance and compression ratio tuning\u003c\/li\u003e\n\u003cli\u003e18cc dish top design to support various combustion chamber volumes and compression ratios\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter available in full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003ePrecision ring grooves sized at 1.2mm\/1.2mm\/3mm for reliable ring sealing and reduced blow-by\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 3.720\" and connecting rod length of 6.2\" for balanced piston dynamics\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios ranging from 8.16 to 9.72 depending on combustion chamber volume (65cc, 74cc, 85cc)\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and fatigue resistance under high-performance conditions\u003c\/li\u003e\n\u003cli\u003eEngineered specifically for the 390 Small Block Mopar Hemi Gen III platform\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are forged from high-grade aluminum alloy, providing an excellent strength-to-weight ratio essential for high-revving engines. The forging process enhances the grain structure of the metal, resulting in pistons that resist cracking, scuffing, and thermal distortion.\u003c\/p\u003e\u003cp\u003eThe pistons feature a carefully engineered dish top design with an 18cc volume reduction, allowing for precise control over compression ratios to suit different performance goals. The ring grooves are machined to tight tolerances to ensure optimal ring fitment and sealing, which helps maintain power and reduce oil consumption.\u003c\/p\u003e\u003cp\u003eAvailable with either full-floating or press-fit wrist pins, these pistons offer flexibility for various engine builds and preferences. The combination of a 3.720\" stroke and 6.2\" connecting rod length ensures balanced piston speed and reduced side loading, contributing to engine longevity and smooth operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing FX Series Forged Pistons are designed as direct replacements for the 6.4L 392 Gen III Mopar Hemi engines used in many Chrysler, Dodge, Jeep, and Ram vehicles. Installation requires standard engine rebuild procedures, including proper honing of the cylinder bores to the specified 4.085\" bore size.\u003c\/p\u003e\u003cp\u003eDepending on the wrist pin option chosen (full-floating or press-fit), installation may require specific pin retention methods. It is recommended to have a professional engine builder or experienced technician perform the installation to ensure correct piston ring orientation, torque specifications, and clearances are met for optimal performance and reliability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons sized for 4.085\" bore\u003c\/li\u003e\n\u003cli\u003eWrist pins (.927\") in either full-floating or press-fit configuration\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings sized 1.2mm\/1.2mm\/3mm\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Pistons are ideal for performance enthusiasts, engine builders, and racers who demand enhanced durability and power from their 6.4L 392 Gen III Mopar Hemi engines. Whether upgrading a factory engine for increased boost, nitrous, or naturally aspirated power, these pistons provide a reliable foundation for high-performance builds.\u003c\/p\u003e\u003cp\u003eThey are well-suited for street performance, drag racing, road racing, and other motorsport applications where engine strength and consistent compression are critical.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381009924308,"sku":"1-6845-4085C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381009957076,"sku":"2-6845-4085C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381009989844,"sku":"3-6845-4085C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381010022612,"sku":"K1-6845-4085C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381010055380,"sku":"K2-6845-4085C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381010088148,"sku":"K3-6845-4085C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002092_4_30a15abb-fdd7-420c-b655-94164851cba5.webp?v=1771667012"},{"product_id":"6845-4075-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-075-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.075\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Gen III Hemi Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6845-4075C \/ 2-6845-4075C \/ 3-6845-4075C \/ K1-6845-4075C \/ K2-6845-4075C \/ K3-6845-4075C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines. Designed to meet the demands of high-performance applications, these pistons offer exceptional strength and durability for enthusiasts and professional builders alike. Whether you are upgrading your engine for increased power or rebuilding for reliability, this piston set provides a precision fit and superior performance characteristics.\u003c\/p\u003e\u003cp\u003eThese forged pistons are crafted to optimize combustion efficiency and withstand the rigors of high-stress environments, making them ideal for street performance, racing, and heavy-duty use. The set is compatible with the 388 Small Block Mopar Hemi Gen III platform, ensuring seamless integration with your existing engine components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Pistons incorporate advanced design and manufacturing techniques to deliver reliable performance and longevity. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for enhanced strength and resistance to impact and heat\u003c\/li\u003e\n\u003cli\u003e4.075\" bore size tailored for 6.4L 392 Gen III Hemi engines\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" for optimized piston-to-head clearance\u003c\/li\u003e\n\u003cli\u003e18cc dish top design to control compression and improve combustion\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter with options for full-floating or press-fit pins\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm for superior ring sealing\u003c\/li\u003e\n\u003cli\u003eCompatible with 3.720\" stroke and 6.2\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable with various combustion chamber volumes to adjust compression ratio (65cc, 74cc, 85cc)\u003c\/li\u003e\n\u003cli\u003ePrecision machining for consistent fit and performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the DSS Racing FX Series is forged from high-grade aluminum alloy, providing an excellent balance of lightweight design and structural integrity. The forging process enhances the grain structure of the metal, resulting in pistons that resist cracking and deformation under extreme conditions. The -18cc dish top design helps manage compression ratios for improved detonation resistance and power delivery.\u003c\/p\u003e\u003cp\u003eThe pistons feature a .927\" wrist pin bore that supports either full-floating or press-fit pins, allowing flexibility based on your engine build preferences. The ring grooves are precisely cut to accommodate 1.2mm top and second rings with a 3mm oil ring, ensuring optimal sealing and oil control for enhanced engine efficiency and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines, making it a direct replacement or upgrade option for these popular platforms. Installation requires standard engine rebuild procedures, including proper honing of the cylinder bores and careful assembly to manufacturer torque specifications. The pistons are compatible with a 3.720\" stroke crankshaft and 6.2\" connecting rods, ensuring a precise fit within the engine assembly.\u003c\/p\u003e\u003cp\u003eBuilders should verify clearance and compression ratio requirements based on their specific cylinder head and combustion chamber volumes. The availability of multiple combustion chamber volume options allows customization to match your performance goals and fuel requirements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons with 4.075\" bore diameter\u003c\/li\u003e\n\u003cli\u003eWrist pins (full-floating or press-fit options depending on SKU)\u003c\/li\u003e\n\u003cli\u003eRing grooves pre-cut for 1.2\/1.2\/3mm ring sets\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for compression ratio and piston dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for automotive enthusiasts, engine builders, and racers seeking a durable, high-performance piston solution for the 6.4L 392 Gen III Hemi engine. Whether upgrading a street machine, building a track-ready race engine, or performing a reliable rebuild, the DSS Racing FX Series pistons provide the strength and precision needed to maximize engine potential.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381010317524,"sku":"1-6845-4075C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381010350292,"sku":"2-6845-4075C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381010383060,"sku":"3-6845-4075C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381010415828,"sku":"K1-6845-4075C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381010448596,"sku":"K2-6845-4075C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381010481364,"sku":"K3-6845-4075C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002091_4_237691cc-8def-4397-95c3-815fed3bc95d.webp?v=1771667012"},{"product_id":"6845-4065-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-065-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Pistons Set 4.065\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Pistons\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Gen III Hemi\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6845-4065C \/ 2-6845-4065C \/ 3-6845-4065C \/ K1-6845-4065C \/ K2-6845-4065C \/ K3-6845-4065C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Pistons are precision-engineered components designed specifically for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.4L 392 Gen III Hemi engine. Crafted to meet the demanding needs of high-performance and racing applications, these pistons offer exceptional strength, durability, and reliability. Whether you are building a powerful street machine or a competitive race engine, these forged pistons provide the foundation for increased horsepower and torque while maintaining engine integrity under extreme conditions.\u003c\/p\u003e\u003cp\u003eWith a bore size of 4.065 inches and a compact design featuring a -18cc dish top, these pistons optimize combustion efficiency and compression ratios. The FX Series pistons are ideal for enthusiasts and professional builders seeking to upgrade their 6.4L Hemi engines with components that deliver consistent performance and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEngineered for high-performance applications, the DSS Racing FX Series Forged Pistons include the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged from premium-grade aluminum alloy for superior strength and heat resistance\u003c\/li\u003e\n\u003cli\u003eCompatible with Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Gen III Hemi engines\u003c\/li\u003e\n\u003cli\u003e4.065\" bore size tailored for 386 Small Block Mopar Hemi Gen III configurations\u003c\/li\u003e\n\u003cli\u003eCompact 1.21\" compression height for optimal piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003e18cc dish top design to control compression ratio and improve detonation resistance\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter available in full-floating or press-fit options\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves sized at 1.2mm \/ 1.2mm \/ 3mm for reliable ring sealing\u003c\/li\u003e\n\u003cli\u003eDesigned for use with a 3.720\" stroke crankshaft and 6.2\" connecting rods\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios vary based on combustion chamber volume: 65cc-9.65, 74cc-8.87, 85cc-8.1\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are forged from high-quality aluminum alloy, providing an excellent balance of lightweight construction and exceptional strength. The forging process enhances the metal’s grain structure, resulting in pistons that withstand the rigors of high cylinder pressures and elevated temperatures common in performance engines.\u003c\/p\u003e\u003cp\u003eEach piston features a carefully engineered dish top with an 18cc volume reduction to optimize combustion chamber dynamics and reduce the risk of detonation. The pistons are designed with precise ring grooves to accommodate performance ring sets, ensuring effective sealing and reduced blow-by. The wrist pin bore supports either full-floating or press-fit pins, allowing builders to customize assembly based on application requirements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are direct fit replacements for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.4L 392 Gen III Hemi engine. Installation requires standard engine assembly procedures and may involve balancing and blueprinting for optimal performance. The pistons are compatible with a 3.720\" stroke crankshaft and 6.2\" connecting rods, making them suitable for engine builds that maintain factory stroke dimensions.\u003c\/p\u003e\u003cp\u003eBuilders should verify piston-to-valve clearance and ring end gaps during installation. The availability of full-floating or press-fit wrist pin options allows for flexibility depending on engine build preferences and intended use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons sized for 4.065\" bore\u003c\/li\u003e\n\u003cli\u003eWrist pin options: full-floating or press-fit (depending on SKU)\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves ready for performance ring sets\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for compression height, dish volume, and pin diameter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Pistons are ideal for automotive enthusiasts, engine builders, and racers who demand reliable, high-strength components for their 6.4L 392 Gen III Hemi engines. They are perfectly suited for street performance upgrades, drag racing, road racing, and other motorsport applications where durability and power gains are critical.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381011103956,"sku":"1-6845-4065C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381011136724,"sku":"2-6845-4065C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381011169492,"sku":"3-6845-4065C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381011202260,"sku":"K1-6845-4065C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381011235028,"sku":"K2-6845-4065C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381011267796,"sku":"K3-6845-4065C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002087_4_58cfc724-0f41-4948-a880-35e0c7ad85ac.webp?v=1771667010"},{"product_id":"6845-4055-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-055-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.055\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6845-4055C \/ 2-6845-4055C \/ 3-6845-4055C \/ K1-6845-4055C \/ K2-6845-4055C \/ K3-6845-4055C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines. Designed to replace factory pistons with a high-performance upgrade, these forged pistons offer enhanced strength and durability for enthusiasts seeking reliable power gains and improved engine longevity. Ideal for street performance, mild racing, and high-output builds, this piston set ensures consistent performance under demanding conditions.\u003c\/p\u003e\u003cp\u003eEach piston is crafted to exacting specifications to fit the 4.055\" bore size of the 6.4L 392 Small Block Mopar HEMI Gen III engines. With a compression height of 1.21 inches and a -18cc dish top design, these pistons help optimize combustion chamber volume and compression ratios for balanced power and efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt for performance and reliability, the DSS Racing FX Series Forged Pistons include the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines\u003c\/li\u003e\n\u003cli\u003e4.055\" bore size tailored for Small Block Mopar HEMI Gen III applications\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and resistance to detonation\u003c\/li\u003e\n\u003cli\u003e18cc dish top design to optimize combustion chamber volume\u003c\/li\u003e\n\u003cli\u003eCompression height of 1.21 inches for precise piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter with options for full-floating or press-fit pins\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring\u003c\/li\u003e\n\u003cli\u003eDesigned for 3.720\" stroke and 6.2\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes to accommodate different compression ratios (65cc, 74cc, 85cc)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FX Series pistons are forged from high-grade aluminum alloy, providing an optimal balance of lightweight design and exceptional strength. The forging process enhances grain structure, resulting in pistons that withstand high cylinder pressures and temperatures typical of performance engines. The -18cc dish top design reduces compression to prevent detonation while maintaining efficient combustion.\u003c\/p\u003e\u003cp\u003eEach piston features precision-machined ring grooves and a durable skirt coating to minimize friction and wear. The wrist pin bore is engineered to accept either full-floating or press-fit pins, allowing flexibility depending on engine build preferences. These pistons are engineered to exact OEM dimensions to ensure a seamless fit and reliable operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct fit for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines with a 4.055\" bore. Installation requires standard engine rebuild procedures, including honing the cylinder walls and verifying clearances. The pistons accommodate a 3.720\" stroke crankshaft and 6.2\" connecting rods, matching factory specifications for smooth assembly.\u003c\/p\u003e\u003cp\u003eBuilders should select the appropriate dish volume piston to achieve the desired compression ratio based on their specific engine setup and fuel requirements. Proper ring installation and pin selection (full-floating or press-fit) are critical for optimal performance and durability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged aluminum pistons (quantity as per SKU selection)\u003c\/li\u003e\n\u003cli\u003eWrist pins compatible with full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings (1.2mm top and second rings, 3mm oil ring)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for automotive enthusiasts and professional engine builders upgrading or rebuilding 6.4L 392 HEMI engines. It suits applications ranging from high-performance street vehicles to mild racing builds where enhanced strength and reliability are essential. The FX Series pistons provide a solid foundation for increased power output while maintaining engine longevity under demanding conditions.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381012021460,"sku":"1-6845-4055C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381012054228,"sku":"2-6845-4055C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381012086996,"sku":"3-6845-4055C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381012119764,"sku":"K1-6845-4055C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381012152532,"sku":"K2-6845-4055C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381012185300,"sku":"K3-6845-4055C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002085_4_a387573f-f2a8-4c27-a05d-8b471104ab61.webp?v=1771667009"},{"product_id":"6840-4125-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing Gen III FX Series Forged Piston Set 4.125\" Bore: Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6840-4125C \/ 2-6840-4125C \/ 3-6840-4125C \/ K1-6840-4125C \/ K2-6840-4125C \/ K3-6840-4125C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing Gen III Hemi FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines. Designed to replace factory pistons, this set offers enhanced strength and durability for high-performance and street applications. Ideal for enthusiasts looking to upgrade their engine’s internals, these pistons provide improved reliability under increased boost, higher RPMs, and aggressive driving conditions.\u003c\/p\u003e\u003cp\u003eWith a 4.125\" bore size and a compact flat-top design, these pistons maintain optimal compression ratios while allowing for various combustion chamber volumes. Whether you are building a naturally aspirated or forced induction engine, the DSS Racing FX Series pistons deliver consistent performance and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt to meet the demands of modern Mopar Hemi engines, these pistons incorporate advanced design elements for superior operation:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 398 Small Block Mopar Hemi Gen III and FX series engines\u003c\/li\u003e\n\u003cli\u003eForged construction for maximum strength and fatigue resistance\u003c\/li\u003e\n\u003cli\u003eFlat-top piston design with -1.5cc volume for precise compression control\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" with options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 3.720\" and connecting rod length of 6.2\"\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes: 65cc, 74cc, and 85cc\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios ranging from 9.52:1 to 11.77:1 depending on chamber size\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the DSS Racing FX Series is forged from high-grade aluminum alloy, providing an excellent balance of lightweight design and structural integrity. The forging process enhances grain structure, resulting in superior resistance to heat and mechanical stress compared to cast pistons. The flat-top design with a slight dish (-1.5cc) optimizes combustion efficiency and reduces the risk of detonation under high-performance conditions.\u003c\/p\u003e\u003cp\u003eThe pistons feature precision-machined ring grooves to ensure proper ring seating and oil control, contributing to reduced blow-by and improved engine longevity. The wrist pin options allow for either full-floating or press-fit installation, accommodating various engine build preferences and enhancing durability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 6.4L 392 Hemi engines with a 4.125\" bore. Installation requires standard engine rebuilding procedures, including proper honing and cleaning of the cylinder bores. Depending on the wrist pin choice, either full-floating or press-fit installation methods can be employed. It is recommended to consult with a professional engine builder to ensure optimal fitment and clearances.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons sized for 4.125\" bore\u003c\/li\u003e\n\u003cli\u003eWrist pins (.927\") with options for full-floating or press-fit\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves for 1.2\/1.2\/3mm ring sets\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is perfect for Mopar enthusiasts and professional engine builders upgrading or rebuilding 6.4L 392 Hemi engines. It suits naturally aspirated builds, forced induction setups, and high-performance street or track applications where enhanced durability and consistent compression ratios are critical.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381012218068,"sku":"1-6840-4125C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381012250836,"sku":"2-6840-4125C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381012283604,"sku":"3-6840-4125C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381012316372,"sku":"K1-6840-4125C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381012349140,"sku":"K2-6840-4125C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381012381908,"sku":"K3-6840-4125C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002083_4_c0df95ad-5f2f-4672-aadd-fac31c458ab0.webp?v=1771667009"},{"product_id":"6840-4100-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-100-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Gen III Hemi Forged Piston Set 4.100\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Gen III Hemi Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler, Dodge, Jeep, Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6840-4100C \/ 2-6840-4100C \/ 3-6840-4100C \/ K1-6840-4100C \/ K2-6840-4100C \/ K3-6840-4100C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Gen III Hemi Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines. Designed to meet the demands of high-performance builds, these pistons offer exceptional strength and durability for enthusiasts and professional builders alike. Whether you are upgrading your engine for increased power or replacing worn factory components, this piston set delivers reliable performance and precision fitment.\u003c\/p\u003e\u003cp\u003eBuilt to handle the rigors of street, strip, or track applications, these forged pistons provide improved thermal resistance and reduced weight compared to cast alternatives. Their design optimizes combustion efficiency and supports higher compression ratios, making them ideal for maximizing the potential of your 6.4L HEMI engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing pistons incorporate advanced engineering and materials to ensure superior performance and longevity. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 4.100\" bore size for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines\u003c\/li\u003e\n\u003cli\u003eForged construction for enhanced strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003eFlat top design with a -1.5cc volume for optimized combustion chamber shape\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" available in full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm\/1.2mm\/3mm for reliable ring sealing and reduced blow-by\u003c\/li\u003e\n\u003cli\u003eDesigned for a 3.720\" stroke and 6.2\" connecting rods, matching factory specifications\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression ratios approximately ranging from 9.41 to 11.63, depending on combustion chamber volume\u003c\/li\u003e\n\u003cli\u003ePrecision machining ensures consistent weight and balance for smooth engine operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, providing an optimal balance of lightweight properties and structural integrity. The forging process enhances grain structure, resulting in pistons that resist cracking, scuffing, and thermal fatigue even under extreme operating conditions.\u003c\/p\u003e\u003cp\u003eThe flat top piston crown with a slight dish (-1.5cc) is engineered to improve combustion efficiency and reduce detonation risk. The pistons are designed to accommodate either full-floating or press-fit wrist pins, allowing flexibility based on engine build preferences. Ring grooves are precision-cut to maintain ring stability and sealing performance, contributing to improved compression and reduced oil consumption.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct fit for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines with a 4.100\" bore. Installation requires standard engine assembly procedures and may necessitate professional machining to ensure optimal clearances and tolerances. The pistons are compatible with factory stroke and rod lengths, simplifying the rebuild or upgrade process without extensive modifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons sized for 4.100\" bore\u003c\/li\u003e\n\u003cli\u003eWrist pins (.927\") available in full-floating or press-fit options\u003c\/li\u003e\n\u003cli\u003ePrecision-cut piston rings (1.2mm\/1.2mm\/3mm)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers seeking to upgrade or rebuild their 6.4L 392 HEMI engines. It suits applications ranging from street performance to competitive motorsports, where durability and power potential are critical. Whether building a high-compression naturally aspirated engine or a boosted setup, these pistons provide a solid foundation for reliable power gains.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381012807892,"sku":"1-6840-4100C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381012840660,"sku":"2-6840-4100C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381012873428,"sku":"3-6840-4100C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381012906196,"sku":"K1-6840-4100C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381012938964,"sku":"K2-6840-4100C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381012971732,"sku":"K3-6840-4100C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002081_4_2e76e57b-46a1-47de-ba35-e2900606f17c.webp?v=1771667008"},{"product_id":"6840-4090-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing Gen III Hemi FX Series Forged Piston Set 4.090\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6840-4090C \/ 2-6840-4090C \/ 3-6840-4090C \/ K1-6840-4090C \/ K2-6840-4090C \/ K3-6840-4090C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing Gen III Hemi FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines. Designed to replace factory pistons in the 391 Small Block Mopar Hemi Gen III platform, these pistons offer enhanced strength and durability for high-performance applications. Ideal for enthusiasts and professional builders seeking reliable, forged pistons that maintain factory bore size while improving engine resilience under demanding conditions.\u003c\/p\u003e\u003cp\u003eWith a 4.090\" bore size and a compact flat-top design, these pistons optimize combustion efficiency and compression ratios, supporting both street and track performance. The set is compatible with full-floating or press-fit wrist pins, allowing flexibility in assembly preferences.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced design elements to ensure superior performance and longevity:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePrecision forged construction for maximum strength and fatigue resistance\u003c\/li\u003e\n\u003cli\u003e1.21\" compression height tailored for Gen III Hemi 6.4L 392 engines\u003c\/li\u003e\n\u003cli\u003e1.5cc flat-top piston crown for optimized combustion chamber volume\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter compatible with full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring for effective sealing\u003c\/li\u003e\n\u003cli\u003eDesigned for a 3.720\" stroke and 6.2\" connecting rods, matching factory specifications\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to achieve compression ratios from 9.38:1 up to 11.6:1\u003c\/li\u003e\n\u003cli\u003eCompatible with most Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines for direct fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDSS Racing utilizes high-grade forged aluminum alloy to manufacture these pistons, ensuring exceptional strength-to-weight ratio and thermal conductivity. The forging process refines the metal grain structure, enhancing durability and resistance to cracking under high cylinder pressures. The flat-top design with a slight volume reduction (-1.5cc) optimizes combustion efficiency and power output while maintaining a reliable compression ratio.\u003c\/p\u003e\u003cp\u003eThe pistons feature precision-machined ring grooves and skirt profiles to reduce friction and wear, contributing to improved engine longevity. The wrist pin bore is engineered for compatibility with both full-floating and press-fit pins, providing versatility during engine assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed for direct replacement in most Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines using a 4.090\" bore. Installation requires standard engine rebuild procedures, including proper honing and cleaning of the cylinder bores. The pistons fit factory stroke and rod dimensions, minimizing the need for additional modifications. Builders should verify ring end gaps and wrist pin fitment based on their specific engine build and assembly preferences.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons sized for 4.090\" bore\u003c\/li\u003e\n\u003cli\u003eCompatible with full-floating or press-fit wrist pins (pins not included)\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves ready for ring installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram 6.4L 392 Hemi engines. It suits applications ranging from street performance to moderate track use where enhanced piston strength and durability are required without altering factory bore size or stroke. These pistons provide a solid foundation for increased power and reliability in naturally aspirated or mildly boosted setups.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381013692628,"sku":"1-6840-4090C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381013725396,"sku":"2-6840-4090C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381013758164,"sku":"3-6840-4090C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381013790932,"sku":"K1-6840-4090C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381013823700,"sku":"K2-6840-4090C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381013856468,"sku":"K3-6840-4090C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002075_4_9e6dd84d-068b-4274-8d73-1df106cf6d39.webp?v=1771667006"},{"product_id":"6840-4085-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-085-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing Gen III Hemi FX Series Forged Piston Set 4.085\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing Gen III Hemi FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6840-4085C \/ 2-6840-4085C \/ 3-6840-4085C \/ K1-6840-4085C \/ K2-6840-4085C \/ K3-6840-4085C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing Gen III Hemi FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines. Designed to meet the demands of high-performance applications, these pistons provide enhanced strength, durability, and reliability for enthusiasts and professional builders alike. Whether you are upgrading your engine for street performance, racing, or heavy-duty use, this piston set offers a precision fit and superior construction to maximize your engine’s potential.\u003c\/p\u003e\u003cp\u003eThese pistons are forged to exacting standards, ensuring consistent quality and performance. They are ideal for those seeking to improve engine efficiency, withstand higher cylinder pressures, and maintain optimal compression ratios without sacrificing reliability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt for performance and durability, the DSS Racing Gen III Hemi FX Series pistons include the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 4.085\" bore size, fitting most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 engines\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and resistance to wear\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" with a -1.5cc flat top design for optimized combustion\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter available in full-floating or press-fit options\u003c\/li\u003e\n\u003cli\u003ePrecision ring grooves sized at 1.2mm \/ 1.2mm \/ 3mm for reliable ring sealing\u003c\/li\u003e\n\u003cli\u003eDesigned for a 3.720\" stroke and 6.2\" connecting rods, matching factory specifications\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios ranging from 9.36:1 to 11.57:1 depending on chamber volume\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, delivering an optimal balance of lightweight design and exceptional strength. The forging process enhances the grain structure of the metal, resulting in pistons that can endure the extreme pressures and temperatures found in high-performance Hemi engines.\u003c\/p\u003e\u003cp\u003eThe flat-top piston design with a slight dish (-1.5cc) promotes efficient combustion and helps control detonation under boost or high compression conditions. The pistons feature precision-machined ring grooves and wrist pin bores to ensure tight tolerances and long-lasting performance. Options for full-floating or press-fit wrist pins allow builders to customize installation based on their specific engine setup and performance goals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 6.4L 392 Hemi engines with a 4.085\" bore. Installation requires standard engine rebuilding procedures and may necessitate professional machining to ensure proper clearances and fitment. The pistons are compatible with factory stroke and rod lengths, making them a direct replacement or upgrade for stock components.\u003c\/p\u003e\u003cp\u003eBuilders should verify compatibility with their specific engine block and consider ring package and wrist pin options during assembly. Proper installation and break-in procedures are essential to maximize piston life and engine performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons (quantity as per kit selection)\u003c\/li\u003e\n\u003cli\u003eWrist pins (full-floating or press-fit depending on option)\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings (1.2mm top and second rings, 3mm oil ring)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing Gen III Hemi FX Series Forged Piston Set is ideal for performance enthusiasts, engine builders, and racers who demand reliable, high-strength components for their 6.4L 392 Hemi engines. Whether upgrading for increased horsepower, forced induction setups, or extended durability under track conditions, these pistons provide a solid foundation for a high-performance build.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381014872276,"sku":"1-6840-4085C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381014905044,"sku":"2-6840-4085C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381014937812,"sku":"3-6840-4085C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381014970580,"sku":"K1-6840-4085C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381015003348,"sku":"K2-6840-4085C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381015036116,"sku":"K3-6840-4085C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002071_4_af042b97-4c2e-4e3f-9573-66e00da5393d.webp?v=1771667004"},{"product_id":"6840-4075-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-075-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing Gen III Hemi FX Series Forged Piston Set 4.075\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing Gen III Hemi FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6840-4075C \/ 2-6840-4075C \/ 3-6840-4075C \/ K1-6840-4075C \/ K2-6840-4075C \/ K3-6840-4075C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing Gen III Hemi FX Series Forged Piston Set is engineered specifically for the 6.4L 392 engines found in Chrysler, Dodge, Jeep, and Ram vehicles. Designed to meet the demands of high-performance builds, these pistons offer exceptional strength and durability for enthusiasts and professional builders alike. Whether upgrading for increased power or replacing worn factory components, this piston set delivers reliable performance and precision fitment.\u003c\/p\u003e\u003cp\u003eThese pistons are crafted to optimize combustion efficiency and withstand the rigors of boosted or naturally aspirated applications. Their forged construction ensures superior resistance to heat and stress, making them ideal for street, track, or racing use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt with advanced engineering and quality materials, the DSS Racing FX Series pistons provide numerous benefits:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 4.075\" bore size for most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 engines\u003c\/li\u003e\n\u003cli\u003eForged construction for enhanced strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003eFlat top design with -1.5cc dish for optimized combustion chamber volume\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" for precise piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter, available in full-floating or press-fit options\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring for effective sealing\u003c\/li\u003e\n\u003cli\u003eCompatible with 3.720\" stroke and 6.2\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression ratios to suit different build goals: approximately 11.52:1 (65cc), 10.4:1 (74cc), and 9.32:1 (85cc)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are forged from premium-grade aluminum alloy, providing an excellent balance of lightweight design and structural integrity. The forging process enhances grain structure, resulting in pistons that resist cracking, scuffing, and thermal fatigue. The flat top with a slight dish (-1.5cc) is engineered to optimize combustion efficiency and reduce detonation risk.\u003c\/p\u003e\u003cp\u003eEach piston features precision-machined ring grooves and a wrist pin bore designed for either full-floating or press-fit pins, allowing builders to tailor the setup to their specific application. The pistons are designed to maintain tight tolerances for consistent performance and longevity in demanding environments.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed for direct fitment in most Chrysler, Dodge, Jeep, and Ram 6.4L 392 Hemi engines with a 4.075\" bore. Installation requires standard engine assembly procedures, and the pistons are compatible with factory or aftermarket components matching the specified dimensions. Builders should verify compression ratio and clearance specifications to ensure optimal performance and reliability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons sized for 4.075\" bore\u003c\/li\u003e\n\u003cli\u003eWrist pins (.927\") with options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves compatible with 1.2\/1.2\/3mm ring sets\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram 6.4L 392 engines. It suits naturally aspirated and forced induction applications where enhanced durability, improved combustion, and reliable power delivery are priorities. Whether building a street performance engine or a track-ready race motor, these pistons offer a solid foundation for high-output builds.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381015724244,"sku":"1-6840-4075C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381015757012,"sku":"2-6840-4075C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381015789780,"sku":"3-6840-4075C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381015822548,"sku":"K1-6840-4075C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381015855316,"sku":"K2-6840-4075C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381015888084,"sku":"K3-6840-4075C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002070_4_a7fdad17-4cbb-415b-b618-eaaf6140b6e6.webp?v=1771667003"},{"product_id":"6840-4065-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-065-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Gen III Hemi Forged Piston Set 4.065\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Gen III Hemi Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6840-4065C \/ 2-6840-4065C \/ 3-6840-4065C \/ K1-6840-4065C \/ K2-6840-4065C \/ K3-6840-4065C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Gen III Hemi Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines. Designed for high-performance applications, these pistons provide exceptional strength and durability to withstand the rigors of racing and aggressive street use. Whether you’re building a high-output street machine or a track-ready race engine, this piston set offers reliable performance and precision fitment for the 386 Small Block Mopar Hemi Gen III platform.\u003c\/p\u003e\u003cp\u003eWith a 4.065\" bore size and a compact 1.21\" compression height, these forged pistons are optimized for improved combustion efficiency and power delivery. The set is ideal for enthusiasts and professional builders seeking to maximize engine longevity and performance under demanding conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing pistons incorporate advanced design and manufacturing techniques to ensure top-tier performance and reliability:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for superior strength and resistance to high stress\u003c\/li\u003e\n\u003cli\u003eFlat top piston design with a -1.5cc dish for optimized combustion chamber volume\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" compatible with full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003ePrecision ring grooves sized at 1.2mm \/ 1.2mm \/ 3mm for effective sealing and reduced friction\u003c\/li\u003e\n\u003cli\u003eCompatible with 3.720\" stroke crankshafts and 6.2\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios ranging from 9.28:1 to 11.47:1 depending on chamber size\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for the 386 Small Block Mopar Hemi Gen III platform\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the FX Series is crafted from high-grade forged aluminum alloy, providing an excellent balance of lightweight design and exceptional durability. The forging process enhances the metal’s grain structure, resulting in pistons that resist cracking, scuffing, and thermal fatigue under extreme operating conditions.\u003c\/p\u003e\u003cp\u003eThe flat top design with a slight dish (-1.5cc) optimizes combustion efficiency and helps manage detonation, while the ring grooves are precision-machined to maintain optimal ring seal and reduce blow-by. The pistons accommodate either full-floating or press-fit wrist pins, offering flexibility for various engine builds and preferences.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is engineered for direct fitment in most Chrysler, Dodge, Jeep, and Ram 6.4L 392 Hemi engines, making it an ideal upgrade for performance rebuilds or engine swaps. Installation requires standard machining and assembly procedures consistent with high-performance engine builds. Proper ring end gap and clearance checks are recommended to ensure optimal performance and longevity.\u003c\/p\u003e\u003cp\u003eThese pistons are compatible with a 4.065\" bore and designed to work seamlessly with the 3.720\" stroke crankshaft and 6.2\" connecting rods typical of the Gen III Hemi platform.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of 8 forged pistons with flat top design\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves\u003c\/li\u003e\n\u003cli\u003eCompatible wrist pin options (full-floating or press-fit)\u003c\/li\u003e\n\u003cli\u003eTechnical specifications and installation guidelines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is perfect for engine builders, racers, and performance enthusiasts who demand reliable, high-strength components for their 6.4L Hemi builds. Whether upgrading a street performance engine or constructing a race-ready powerplant, these pistons provide the durability and precision needed to handle increased boost, higher RPMs, and aggressive tuning.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381016314068,"sku":"1-6840-4065C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381016346836,"sku":"2-6840-4065C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381016379604,"sku":"3-6840-4065C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381016412372,"sku":"K1-6840-4065C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381016445140,"sku":"K2-6840-4065C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381016477908,"sku":"K3-6840-4065C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002066_4_c0a5947a-23ef-4cfd-aed0-3af819d3ccd5.webp?v=1771667002"},{"product_id":"6840-4055-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-055-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing Gen III Hemi FX Series Forged Piston Set 4.055\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6840-4055C \/ 2-6840-4055C \/ 3-6840-4055C \/ K1-6840-4055C \/ K2-6840-4055C \/ K3-6840-4055C\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing Gen III Hemi FX Series Forged Piston Set is engineered for enthusiasts and professional builders seeking durable, high-performance pistons for Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines. Designed to fit most 6.4L 392 small block Mopar Hemi Gen III engines, these pistons offer a perfect balance of strength, precision, and reliability for street, strip, or track applications.\u003c\/p\u003e\u003cp\u003eWith a 4.055\" bore size and a compact 1.21\" compression height, these forged pistons provide excellent compatibility with factory and aftermarket components. Their flat-top design with a -1.5cc volume optimizes combustion efficiency and power output, making them ideal for high-performance builds that demand consistent results under extreme conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons incorporate advanced engineering and quality materials to deliver superior performance and longevity. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for enhanced strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003eFlat-top piston design with a -1.5cc volume for optimized combustion chamber dynamics\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" compatible with full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm\/1.2mm\/3mm to accommodate high-performance piston rings\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 3.720\" and connecting rod length of 6.2\" for precise engine geometry\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression volumes (65cc, 74cc, 85cc) to suit various compression ratio requirements\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for the 384 Small Block Mopar Hemi Gen III platform\u003c\/li\u003e\n\u003cli\u003ePrecision manufacturing ensures tight tolerances and consistent fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, providing an optimal combination of lightweight strength and thermal conductivity. This material choice helps reduce reciprocating mass while maintaining the structural integrity needed for high-RPM and high-boost applications. The pistons feature a carefully engineered flat-top profile with a slight dish to fine-tune compression ratios, enhancing combustion efficiency and power delivery.\u003c\/p\u003e\u003cp\u003eEach piston is machined with precision ring grooves and pin bores to ensure proper sealing and minimal friction. The option for full-floating or press-fit wrist pins allows builders to tailor the setup to their specific engine build and performance goals. The robust design supports aggressive tuning and extended durability in demanding environments.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed to fit most Chrysler, Dodge, Jeep, and Ram 6.4L 392 Hemi Gen III engines with a 4.055\" bore. Installation requires standard engine assembly procedures, and the pistons are compatible with factory or aftermarket rods featuring a 6.2\" length and a 3.720\" stroke. Builders should verify clearances and ring end gaps during installation to ensure optimal performance and longevity.\u003c\/p\u003e\u003cp\u003eNo major modifications are typically necessary, making these pistons a direct replacement or upgrade option for performance rebuilds and engine refreshes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons (quantity as per kit selection)\u003c\/li\u003e\n\u003cli\u003eCompatible wrist pins (.927\" diameter)\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves ready for high-performance piston rings\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePerformance engine builders upgrading 6.4L 392 Hemi Gen III platforms\u003c\/li\u003e\n\u003cli\u003eStreet and strip enthusiasts seeking reliable forged pistons for high horsepower applications\u003c\/li\u003e\n\u003cli\u003eMotorsport participants requiring durable components for drag racing, road racing, or off-road use\u003c\/li\u003e\n\u003cli\u003eEngine rebuilders aiming to improve compression ratios and combustion efficiency\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381016510676,"sku":"1-6840-4055C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381016543444,"sku":"2-6840-4055C","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381016576212,"sku":"3-6840-4055C","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381016608980,"sku":"K1-6840-4055C","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381016641748,"sku":"K2-6840-4055C","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381016674516,"sku":"K3-6840-4055C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002063_4_a1385b86-30f0-40b6-9be6-1c9f22480975.webp?v=1771667000"},{"product_id":"6837-4125-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing FX Series +4cc Dome Top Forged Piston Set: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series +4cc Dome Top Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6837-4125 \/ 2-6837-4125 \/ 3-6837-4125 \/ K1-6837-4125 \/ K2-6837-4125 \/ K3-6837-4125\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series +4cc Dome Top Forged Piston Set is engineered specifically for the 6.4L 392 HEMI engines found in Chrysler, Dodge, Jeep, and Ram vehicles. Designed to enhance performance and durability, these pistons are an ideal upgrade for enthusiasts seeking improved combustion efficiency and reliability under high-stress conditions. Whether you are building a high-performance street machine or a track-focused build, these pistons deliver consistent power gains and long-lasting strength.\u003c\/p\u003e\u003cp\u003eWith a 4.125\" bore size and a +4cc dome top design, these pistons increase compression ratios while maintaining optimal combustion chamber dynamics. They are compatible with the 398 Small Block Mopar HEMI Gen III platform and feature a compact 1.21\" compression height, making them a direct fit for most 6.4L 392 applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt for precision and performance, the DSS Racing FX Series pistons offer the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e+4cc dome top design to increase compression and improve power output\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and durability under high RPM and boost\u003c\/li\u003e\n\u003cli\u003e1.21\" compression height optimized for 6.4L 392 HEMI engines\u003c\/li\u003e\n\u003cli\u003e.945\" pin diameter with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm for reliable ring sealing and reduced friction\u003c\/li\u003e\n\u003cli\u003eCompatible with a 3.720\" stroke and 6.2\" connecting rods for precise fitment\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volume options (65cc, 74cc, 85cc) to tailor compression ratios from approximately 12.68:1 to 10.08:1\u003c\/li\u003e\n\u003cli\u003eDesigned to withstand the rigors of high-performance and racing environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are crafted from high-grade forged aluminum alloy, providing an excellent balance of lightweight strength and thermal conductivity. The forging process enhances grain structure and mechanical properties, ensuring resistance to cracking and deformation under extreme heat and pressure. The dome top shape is precisely machined to optimize combustion chamber shape and improve flame propagation, resulting in better efficiency and power delivery.\u003c\/p\u003e\u003cp\u003eThe pistons feature a robust pin boss design with a .945\" wrist pin diameter, available in both full-floating and press-fit options to suit different engine builds and preferences. The ring grooves are engineered to accommodate performance ring sets, maintaining a tight seal while minimizing friction and wear.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct replacement for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, requiring no major modifications for installation. The compact 1.21\" compression height and precise bore sizing ensure compatibility with stock and aftermarket components. Installation should be performed by a professional engine builder or experienced technician to ensure proper ring end gap, piston orientation, and clearances are maintained for optimal performance and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged +4cc dome top pistons (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eWrist pins (.945\" diameter), full-floating or press-fit depending on selected option\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for ring groove dimensions and compression height\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding 6.4L 392 HEMI engines. It suits applications ranging from street performance to competitive motorsports where increased compression and durability are critical. Whether upgrading a factory engine or building a custom high-output powerplant, these pistons provide a reliable foundation for enhanced horsepower and torque.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381017624788,"sku":"1-6837-4125","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381017657556,"sku":"2-6837-4125","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381017690324,"sku":"3-6837-4125","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381017723092,"sku":"K1-6837-4125","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381017755860,"sku":"K2-6837-4125","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381017788628,"sku":"K3-6837-4125","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002061_4_13bcc8a9-e643-462d-bcfa-17bed47dadd0.webp?v=1771666999"},{"product_id":"6837-4100-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-100-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing FX Series +4cc Dome Top Forged Piston Set 4.100\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series +4cc Dome Top Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 (Gen III Hemi)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6837-4100 \/ 2-6837-4100 \/ 3-6837-4100 \/ K1-6837-4100 \/ K2-6837-4100 \/ K3-6837-4100\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series +4cc Dome Top Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, providing a reliable and performance-oriented upgrade for enthusiasts and professional builders alike. Designed to fit most 6.4L 392 models, these pistons offer a precise 4.100\" bore size and a +4cc dome top design to optimize combustion chamber volume and compression ratios.\u003c\/p\u003e\u003cp\u003eIdeal for high-performance applications, these pistons are crafted to enhance engine durability and efficiency while supporting increased power output. Whether you are rebuilding or upgrading your 6.4L HEMI, the DSS Racing FX Series pistons deliver consistent quality and performance for street, strip, or track use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced design elements and materials to meet the demands of modern high-performance engines:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e+4cc dome top design to increase compression and improve combustion efficiency\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.100\" bore size, fitting most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 engines\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003ePin diameter of .945\" with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm top and second rings, and 3mm oil ring groove for optimal sealing\u003c\/li\u003e\n\u003cli\u003eDesigned for a 3.720\" stroke and 6.2\" connecting rods, matching factory and performance builds\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression volumes (65cc, 74cc, 85cc) to tailor compression ratios from approximately 9.98 to 12.56\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" to maintain proper deck clearance and piston-to-valve clearance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the DSS Racing FX Series is forged from high-grade aluminum alloy, providing an excellent balance of lightweight strength and thermal conductivity. The dome top design is precision-machined to ensure consistent combustion chamber volume and optimal compression ratios tailored to your engine build.\u003c\/p\u003e\u003cp\u003eThe pistons feature carefully engineered ring grooves to accommodate high-performance piston rings, enhancing sealing and reducing blow-by. The wrist pin bore supports either full-floating or press-fit pins, allowing flexibility depending on your engine assembly preferences. This attention to detail ensures durability and reliability even under demanding operating conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed as direct replacements for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, making installation straightforward for experienced engine builders. Proper machining of the cylinder bore to 4.100\" is required to ensure a precise fit. Depending on your build, selecting the appropriate wrist pin retention method (full-floating or press-fit) is essential for optimal performance and longevity.\u003c\/p\u003e\u003cp\u003eDue to the +4cc dome volume, these pistons may alter compression ratios, so verify compatibility with your cylinder head and combustion chamber specifications to achieve desired engine performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged aluminum pistons (quantity as per SKU selection)\u003c\/li\u003e\n\u003cli\u003eWrist pin(s) compatible with full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for bore size, ring groove dimensions, and compression volumes\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 HEMI engines. It suits applications ranging from street performance to competitive motorsports where increased compression and durability are critical. The multiple compression volume options allow customization to match forced induction or naturally aspirated setups.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381017428180,"sku":"1-6837-4100","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381017460948,"sku":"2-6837-4100","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381017493716,"sku":"3-6837-4100","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381017526484,"sku":"K1-6837-4100","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381017559252,"sku":"K2-6837-4100","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381017592020,"sku":"K3-6837-4100","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002060_4_b7d31136-29f2-4b36-b2dc-91ac74022a8e.webp?v=1771666999"},{"product_id":"6837-4090-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing FX Series +4cc Dome Forged Piston Set 4.090\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler, Dodge, Jeep, Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6837-4090 \/ 2-6837-4090 \/ 3-6837-4090 \/ K1-6837-4090 \/ K2-6837-4090 \/ K3-6837-4090\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series +4cc Dome Top Forged Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines. Designed to fit most 6.4L 392 HEMI models, these pistons provide a reliable upgrade for enthusiasts seeking enhanced durability and improved combustion efficiency. With a 4.090\" bore size and a +4cc dome top design, this piston set offers increased compression ratios and optimized power delivery.\u003c\/p\u003e\u003cp\u003eIdeal for builders and racers who demand precision and strength, these pistons support aggressive tuning and higher boost levels while maintaining engine reliability. Whether you are rebuilding your 6.4L HEMI or upgrading for performance gains, the DSS Racing FX Series pistons deliver consistent quality and performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced engineering to meet the demands of modern high-output Mopar engines. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e+4cc dome top design for increased compression and improved combustion\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.090\" bore size, fitting most Chrysler\/Dodge\/Jeep\/Ram 6.4L 392 engines\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003ePin diameter of .945\" with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm top and second rings, 3mm oil ring for optimal sealing\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" to maintain proper piston-to-head clearance\u003c\/li\u003e\n\u003cli\u003eDesigned for 3.720\" stroke and 6.2\" rod length applications\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios ranging from 9.94:1 to 12.5:1 depending on chamber size\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, providing an excellent balance of lightweight design and exceptional strength. The forging process enhances the metal’s grain structure, resulting in pistons that resist cracking, scuffing, and thermal fatigue even under extreme operating conditions.\u003c\/p\u003e\u003cp\u003eThe dome top design increases the combustion chamber volume by +4cc, which helps optimize the compression ratio for improved power output and throttle response. Precision machining ensures tight tolerances for a perfect fit in the cylinder bore, while the ring grooves are engineered to accommodate high-performance piston rings for superior sealing and oil control.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct fit for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines with a 4.090\" bore. Installation requires standard engine rebuilding procedures, including proper honing and cleaning of the cylinder bores. Depending on your build, you can choose between full-floating or press-fit wrist pins to match your connecting rods and performance goals.\u003c\/p\u003e\u003cp\u003eDue to the +4cc dome volume and specific comp height, it is important to verify piston-to-valve clearance and deck height during assembly. Professional installation is recommended to ensure optimal performance and longevity.\u003c\/p\u003e\u003cp\u003eWhat’s Included\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged aluminum pistons (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eWrist pins (.945\" diameter), available in full-floating or press-fit options\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings (1.2mm top and second rings, 3mm oil ring)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is perfect for performance enthusiasts, engine builders, and racers upgrading or rebuilding their 6.4L 392 HEMI engines. Whether you are aiming for increased horsepower, improved throttle response, or enhanced engine durability under high-stress conditions, the DSS Racing FX Series pistons provide a reliable foundation for your build.\u003c\/p\u003e\u003cp\u003eThey are especially suited for naturally aspirated, supercharged, or turbocharged applications where strength and precision are critical.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381017821396,"sku":"1-6837-4090","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381017854164,"sku":"2-6837-4090","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381017886932,"sku":"3-6837-4090","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381017919700,"sku":"K1-6837-4090","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381017952468,"sku":"K2-6837-4090","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381017985236,"sku":"K3-6837-4090","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002059_4_02b6ce39-2175-46dd-bc2c-30707502f6ab.webp?v=1771666999"},{"product_id":"6833-4125-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-12cc-dish-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.125\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Gen III Hemi\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6833-4125 \/ 2-6833-4125 \/ 3-6833-4125 \/ K1-6833-4125 \/ K2-6833-4125 \/ K3-6833-4125\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines. Designed to replace factory pistons, this set offers enhanced strength and durability for high-performance and racing applications. Ideal for enthusiasts and professional builders seeking reliable, lightweight pistons that maintain optimal compression and withstand extreme conditions.\u003c\/p\u003e\u003cp\u003eThese pistons are precision forged to exacting standards, ensuring consistent quality and fitment. With a 4.125\" bore size and a compact dish design, they provide excellent combustion efficiency and support aggressive tuning setups.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt to deliver superior performance and longevity, the DSS Racing FX Series Forged Pistons include the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 6.4L 392 Gen III Hemi engines from Chrysler, Dodge, Jeep, and Ram\u003c\/li\u003e\n\u003cli\u003e4.125\" bore diameter optimized for 398 Small Block Mopar Hemi Gen III applications\u003c\/li\u003e\n\u003cli\u003eCompact 12cc dish top design for improved combustion and compression control\u003c\/li\u003e\n\u003cli\u003eForged construction for enhanced strength and resistance to detonation\u003c\/li\u003e\n\u003cli\u003ePin diameter of .945\" with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm for reliable sealing and reduced friction\u003c\/li\u003e\n\u003cli\u003eDesigned for use with a 3.720\" stroke and 6.2\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression heights (65cc, 74cc, 85cc) to achieve approximate compression ratios of 10.51, 9.61, and 8.71 respectively\u003c\/li\u003e\n\u003cli\u003ePrecision machined for consistent fit and performance in high-stress environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FX Series pistons are crafted from high-grade forged aluminum alloy, providing an optimal balance of strength and lightweight characteristics. This construction improves engine responsiveness and reduces reciprocating mass, which is critical for high RPM durability. The pistons feature a carefully engineered dish top with a -12cc volume to optimize combustion chamber shape and compression ratio, enhancing power output and efficiency.\u003c\/p\u003e\u003cp\u003eEach piston is designed with precise ring grooves to accommodate high-performance piston rings, ensuring excellent sealing and minimizing blow-by. The wrist pin bore supports either full-floating or press-fit pins, allowing builders to tailor the setup to their specific engine requirements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are direct fit replacements for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines. Installation requires standard engine assembly procedures, with attention to proper ring end gap and wrist pin fitment based on the selected configuration. No major modifications are necessary when upgrading from factory pistons, making them suitable for both rebuilds and performance upgrades.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of four DSS Racing FX Series forged pistons with 4.125\" bore\u003c\/li\u003e\n\u003cli\u003eWrist pin options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for compression height and dish volume\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers who demand reliable, high-strength components for the Mopar 6.4L 392 Gen III Hemi platform. Whether upgrading for increased power, durability, or engine rebuilds, these pistons provide a solid foundation for enhanced engine performance and longevity.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018018004,"sku":"1-6833-4125","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018050772,"sku":"2-6833-4125","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381018083540,"sku":"3-6833-4125","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018116308,"sku":"K1-6833-4125","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018149076,"sku":"K2-6833-4125","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018181844,"sku":"K3-6833-4125","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002058_4_1f481fa0-764e-44c6-bf98-314b1e3ae93a.webp?v=1771666998"},{"product_id":"6833-4100-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-12cc-dish-top-gen-iii-hemi-forged-piston-set-4-100-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.100\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6833-4100 \/ 2-6833-4100 \/ 3-6833-4100 \/ K1-6833-4100 \/ K2-6833-4100 \/ K3-6833-4100\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines. Designed to replace factory pistons with a high-performance upgrade, these forged pistons provide enhanced strength, durability, and reliability under extreme conditions. Ideal for enthusiasts and professional builders looking to maximize engine output and longevity, this piston set supports both street and track applications.\u003c\/p\u003e\u003cp\u003eBuilt to exacting standards, these pistons are compatible with the 393 Small Block Mopar HEMI Gen III platform and feature a 4.100\" bore size. They are designed to maintain optimal compression ratios while accommodating various combustion chamber volumes, making them versatile for different build goals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons incorporate advanced design elements and precision manufacturing to deliver superior performance and reliability:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for maximum strength and resistance to high-stress conditions\u003c\/li\u003e\n\u003cli\u003e4.100\" bore size tailored for most 6.4L 392 HEMI engines\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" for optimal piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003e12cc dish top design to control compression and support various combustion chamber sizes\u003c\/li\u003e\n\u003cli\u003e.945\" wrist pin diameter with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring for effective sealing and oil control\u003c\/li\u003e\n\u003cli\u003eCompatible with 3.720\" stroke and 6.2\" connecting rods, matching factory and aftermarket setups\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to achieve compression ratios from 8.62:1 up to 10.39:1\u003c\/li\u003e\n\u003cli\u003ePrecision balanced and machined for consistent performance and longevity\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCrafted from high-grade forged aluminum alloy, the DSS Racing FX Series pistons offer superior strength-to-weight ratio compared to cast pistons. The forging process enhances grain structure, providing increased resistance to thermal and mechanical stress. The pistons feature a carefully engineered dish top design with a -12cc volume to optimize combustion efficiency and reduce detonation risk.\u003c\/p\u003e\u003cp\u003eThe wrist pin bore is designed to accommodate either full-floating or press-fit pins, allowing flexibility depending on engine build preferences. Ring grooves are precision-machined to ensure proper ring seating and sealing, contributing to improved oil control and reduced blow-by. The pistons are designed to work seamlessly with the 6.4L 392 HEMI’s 3.720\" stroke crankshaft and 6.2\" rods, maintaining factory geometry and clearances.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is engineered as a direct fit replacement for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines. Installation requires standard engine assembly procedures, including proper ring end gap setting, wrist pin installation, and piston orientation. Depending on the wrist pin option selected (full-floating or press-fit), minor adjustments to assembly technique may be necessary.\u003c\/p\u003e\u003cp\u003eThese pistons are compatible with factory and aftermarket components designed for the 393 Small Block Mopar HEMI Gen III platform, making them suitable for rebuilds, performance upgrades, and custom engine builds without extensive modifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of 8 DSS Racing FX Series forged pistons (4.100\" bore)\u003c\/li\u003e\n\u003cli\u003eWrist pins (.945\") with options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings (1.2mm top and second rings, 3mm oil rings)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers who demand reliable, high-strength components for their 6.4L 392 HEMI-powered Chrysler, Dodge, Jeep, or Ram vehicles. Whether upgrading a street engine for increased power and durability or building a race-ready powerplant, these forged pistons provide the foundation for enhanced performance and engine longevity.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018214612,"sku":"1-6833-4100","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018247380,"sku":"2-6833-4100","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381018280148,"sku":"3-6833-4100","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018312916,"sku":"K1-6833-4100","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018345684,"sku":"K2-6833-4100","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018378452,"sku":"K3-6833-4100","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002057_4_3a1ebeac-6d0b-4d03-9c80-e3efc66bb01e.webp?v=1771666998"},{"product_id":"6830-4125-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing FX Series Gen III Hemi Forged Piston Set 4.125\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Gen III Hemi Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6830-4125 \/ 2-6830-4125 \/ 3-6830-4125 \/ K1-6830-4125 \/ K2-6830-4125 \/ K3-6830-4125\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Gen III Hemi Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines, including the popular 398 Small Block Mopar Hemi Gen III platform. Designed for enthusiasts and professional builders seeking enhanced durability and performance, these pistons offer a reliable upgrade for high-output applications. Whether you are rebuilding your engine or upgrading for increased power and longevity, this piston set delivers precision and strength to meet demanding conditions.\u003c\/p\u003e\u003cp\u003eWith a bore size of 4.125 inches and a compact flat-top design, these pistons optimize combustion efficiency and compression ratios, making them ideal for street performance, racing, and high-performance builds. The set is compatible with both full-floating and press-fit wrist pins, providing flexibility for various engine configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced design elements and materials to ensure superior performance and reliability:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for maximum strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003e1.21\" compression height optimized for Gen III Hemi engines\u003c\/li\u003e\n\u003cli\u003e1.5cc flat-top design to fine-tune compression ratios\u003c\/li\u003e\n\u003cli\u003e.945\" wrist pin diameter compatible with full-floating or press-fit setups\u003c\/li\u003e\n\u003cli\u003ePrecision ring grooves sized at 1.2mm \/ 1.2mm \/ 3mm for optimal ring seal and reduced friction\u003c\/li\u003e\n\u003cli\u003eDesigned for a 3.720\" stroke and 6.2\" rod length combination\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volume options (65cc, 74cc, 85cc) to adjust compression ratios from approximately 9.52:1 to 11.77:1\u003c\/li\u003e\n\u003cli\u003eCompatible with most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 engine builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDSS Racing utilizes high-grade forged aluminum alloy to manufacture these pistons, ensuring exceptional strength-to-weight ratio and resistance to thermal and mechanical stress. The pistons are CNC-machined to exacting tolerances, providing consistent fitment and performance. The flat-top design with a slight volume offset (-1.5cc) allows for precise compression ratio tuning, which is critical for optimizing power output and engine efficiency.\u003c\/p\u003e\u003cp\u003eThe ring grooves are engineered to accommodate performance ring sets, maintaining excellent sealing under high cylinder pressures. The wrist pin bore supports both full-floating and press-fit pins, offering versatility depending on engine build preferences. This combination of materials and design features results in pistons that withstand the rigors of high-performance and forced induction applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines, making it a direct replacement for stock pistons in these platforms. Installation requires standard engine assembly procedures, and the pistons are compatible with existing rods and rings designed for the specified dimensions. Builders should verify bore size and clearances to ensure proper fitment and performance.\u003c\/p\u003e\u003cp\u003eDue to the precision manufacturing and compatibility with common wrist pin configurations, these pistons simplify the rebuild or upgrade process without requiring extensive modifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of four forged pistons with 4.125\" bore diameter\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves\u003c\/li\u003e\n\u003cli\u003eCompatible wrist pin bores for full-floating or press-fit pins\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePerformance engine builders upgrading Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 engines\u003c\/li\u003e\n\u003cli\u003eEnthusiasts seeking durable forged pistons for street and track use\u003c\/li\u003e\n\u003cli\u003eRebuild projects requiring reliable, high-quality piston replacements\u003c\/li\u003e\n\u003cli\u003eApplications demanding optimized compression ratios for power and efficiency\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018411220,"sku":"1-6830-4125","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018443988,"sku":"2-6830-4125","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381018476756,"sku":"3-6830-4125","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018509524,"sku":"K1-6830-4125","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018542292,"sku":"K2-6830-4125","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018575060,"sku":"K3-6830-4125","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002056_4_5684d5f4-90d6-400d-874f-76a0ea33a234.webp?v=1771666997"},{"product_id":"6833-4090-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-12cc-dish-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.090\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6833-4090 \/ 2-6833-4090 \/ 3-6833-4090 \/ K1-6833-4090 \/ K2-6833-4090 \/ K3-6833-4090\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, delivering exceptional strength and durability for high-performance applications. Designed to fit most 6.4L 392 models, these pistons offer a precise 4.090\" bore size and are ideal for enthusiasts and professional builders seeking reliable, race-ready components.\u003c\/p\u003e\u003cp\u003eBuilt to withstand the rigors of aggressive street driving, track use, and motorsports, this piston set enhances engine efficiency and longevity. The FX Series pistons provide a perfect balance of lightweight construction and robust design, helping to improve throttle response and overall engine performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced design elements and manufacturing techniques to meet the demands of high-output Mopar HEMI engines:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 391 Small Block Mopar HEMI Gen III engines\u003c\/li\u003e\n\u003cli\u003eComp Height: 1.21\" for optimal piston-to-head clearance\u003c\/li\u003e\n\u003cli\u003e12cc dish top design to control compression and combustion characteristics\u003c\/li\u003e\n\u003cli\u003ePin diameter: .945\" with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring for superior sealing\u003c\/li\u003e\n\u003cli\u003eStroke compatibility: 3.720\" stroke engines\u003c\/li\u003e\n\u003cli\u003eConnecting rod length: 6.2\" for balanced piston travel and engine geometry\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios from 8.59:1 to 10.36:1\u003c\/li\u003e\n\u003cli\u003ePrecision forged for enhanced strength and fatigue resistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, ensuring superior strength-to-weight ratio and excellent thermal conductivity. The forging process refines the grain structure of the metal, resulting in pistons that resist cracking and deformation under extreme heat and pressure.\u003c\/p\u003e\u003cp\u003eThe pistons feature a carefully engineered dish top design with a -12cc volume to optimize combustion chamber shape and reduce detonation risk. The pin bosses are reinforced to accommodate either full-floating or press-fit wrist pins, providing flexibility for various engine builds and performance goals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed for direct fitment in most Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines, making it a straightforward upgrade for engine rebuilds or performance enhancements. Installation requires standard machining checks and clearances to ensure proper ring seal and piston-to-cylinder wall fitment.\u003c\/p\u003e\u003cp\u003eBuilders should verify compatibility with their specific engine configuration, including stroke and rod length, to achieve optimal performance and reliability. Professional installation is recommended to maintain engine integrity and warranty compliance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons with 4.090\" bore size\u003c\/li\u003e\n\u003cli\u003eWrist pin options: full-floating or press-fit (depending on selection)\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves for 1.2mm top and second rings, 3mm oil ring\u003c\/li\u003e\n\u003cli\u003eDetailed specifications and installation guidelines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for Mopar enthusiasts, engine builders, and racers looking to upgrade their 6.4L 392 HEMI engines with durable, high-performance components. Whether building a street\/strip machine, a track-focused vehicle, or a high-output daily driver, the DSS Racing FX Series pistons provide the strength and precision needed to maximize engine potential.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018607828,"sku":"1-6833-4090","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018640596,"sku":"2-6833-4090","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381018673364,"sku":"3-6833-4090","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018706132,"sku":"K1-6833-4090","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018738900,"sku":"K2-6833-4090","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381018771668,"sku":"K3-6833-4090","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002055_4_46f3dc67-fdab-4493-8bf2-9d43e86732fb.webp?v=1771666997"},{"product_id":"6830-4100-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-100-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing Gen III FX Series Forged Flat Top Piston Set 4.100\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing Gen III FX Series Forged Flat Top Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler, Dodge, Jeep, Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6830-4100 \/ 2-6830-4100 \/ 3-6830-4100 \/ K1-6830-4100 \/ K2-6830-4100 \/ K3-6830-4100\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing Gen III FX Series Forged Flat Top Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.4L 392 HEMI engine. Designed to replace factory pistons, this set offers enhanced strength and durability to withstand the rigors of increased horsepower and aggressive driving conditions. Ideal for enthusiasts and professional builders looking to maximize engine reliability and efficiency, these pistons deliver consistent performance and improved combustion characteristics.\u003c\/p\u003e\u003cp\u003eBuilt to exacting standards, these pistons feature a flat top design with a -1.5cc dish, optimizing compression ratios for a variety of combustion chamber sizes. Whether upgrading for street performance, track use, or off-road applications, this piston set provides a solid foundation for engine builds requiring precision and toughness.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDesigned with advanced engineering and premium materials, the DSS Racing Gen III FX Series pistons offer the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 6.4L 392 Small Block Mopar HEMI Gen III engines\u003c\/li\u003e\n\u003cli\u003eFlat top piston design with a -1.5cc dish for optimized combustion\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21 inches for precise deck clearance\u003c\/li\u003e\n\u003cli\u003e.945-inch wrist pin diameter, available in full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 3.720 inches and connecting rod length of 6.2 inches\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios vary by combustion chamber size: 11.63:1 (65cc), 10.5:1 (74cc), 9.41:1 (85cc)\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003ePrecision machining ensures tight tolerances and consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the DSS Racing Gen III FX Series is forged from high-grade aluminum alloy, providing an excellent balance of lightweight design and exceptional strength. The forging process enhances the metal’s grain structure, resulting in pistons that resist cracking, scuffing, and thermal fatigue even under extreme operating conditions. The flat top design with a slight dish improves combustion efficiency and helps control detonation, making these pistons suitable for a wide range of compression ratios and fuel types.\u003c\/p\u003e\u003cp\u003eAttention to detail in the ring grooves and wrist pin bore ensures optimal ring seal and wrist pin stability, reducing friction and wear. The option for full-floating or press-fit wrist pins allows builders to tailor the pistons to their specific engine setup and performance goals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct fit replacement for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, making installation straightforward for experienced engine builders and professional shops. Minimal modifications are required when used with compatible components, and the pistons maintain factory deck height specifications for ease of assembly. Proper ring installation and clearance checks are recommended to ensure optimal performance and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged flat top pistons (quantity as required for engine configuration)\u003c\/li\u003e\n\u003cli\u003eWrist pins (full-floating or press-fit depending on selected option)\u003c\/li\u003e\n\u003cli\u003eRing sets matching the specified groove dimensions\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram 6.4L 392 HEMI engines. It suits applications ranging from street performance and muscle car builds to off-road and track racing, where enhanced durability and precise combustion control are critical. Whether increasing boost, adding nitrous, or simply seeking a stronger bottom end, these pistons provide a reliable foundation for high-output engine builds.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381019689172,"sku":"1-6830-4100","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381019721940,"sku":"2-6830-4100","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381019754708,"sku":"3-6830-4100","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381019787476,"sku":"K1-6830-4100","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381019820244,"sku":"K2-6830-4100","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381019853012,"sku":"K3-6830-4100","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002054_4_b58f0545-f213-4f4d-bccf-6c0dff61d579.webp?v=1771666997"},{"product_id":"6830-4090-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing FX Series Gen III Hemi Forged Piston Set 4.090\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Gen III Hemi Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6830-4090 \/ 2-6830-4090 \/ 3-6830-4090 \/ K1-6830-4090 \/ K2-6830-4090 \/ K3-6830-4090\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Gen III Hemi Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines. Designed to replace factory pistons, this set offers enhanced durability and performance for enthusiasts seeking reliable power gains and long-lasting engine integrity. Whether you're building a high-performance street machine or a track-ready build, these forged pistons provide the strength and precision needed to handle increased cylinder pressures and elevated RPMs.\u003c\/p\u003e\u003cp\u003eFeaturing a 4.090\" bore size and a compact 1.21\" compression height, these pistons are optimized for the Gen III Hemi small block architecture. Their flat-top design with a -1.5cc dish volume allows for fine-tuning compression ratios to suit various combustion chamber sizes and fuel types, making them versatile for multiple performance applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing forged pistons incorporate advanced engineering to deliver superior performance and reliability:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Gen III Hemi engines\u003c\/li\u003e\n\u003cli\u003e4.090\" bore diameter for precise fitment in factory cylinders\u003c\/li\u003e\n\u003cli\u003eForged construction for enhanced strength and resistance to detonation\u003c\/li\u003e\n\u003cli\u003eFlat-top piston design with -1.5cc dish for optimized combustion\u003c\/li\u003e\n\u003cli\u003eCompression height of 1.21\" tailored for Gen III small block Hemi architecture\u003c\/li\u003e\n\u003cli\u003e.945\" wrist pin diameter with options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm for reliable ring sealing\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 3.720\" and connecting rod length of 6.2\" for balanced piston-to-rod geometry\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes to achieve approximate compression ratios of 11.6:1 (65cc), 10.47:1 (74cc), and 9.38:1 (85cc)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the DSS Racing FX Series is crafted from high-grade forged aluminum alloy, delivering exceptional strength-to-weight ratio and thermal conductivity. The forging process refines the grain structure of the metal, resulting in pistons that withstand the rigors of high-performance combustion environments without compromising durability.\u003c\/p\u003e\u003cp\u003eThe pistons feature precision-machined ring grooves and skirt profiles to minimize friction and wear, while the flat-top design promotes efficient combustion and consistent power delivery. The wrist pin bore is engineered for either full-floating or press-fit configurations, allowing builders to select the optimal setup for their application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct replacement for most Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines with a 4.090\" bore. Installation requires standard engine assembly procedures and may involve balancing and blueprinting for optimal performance. No major modifications to the block or connecting rods are typically necessary, but professional installation is recommended to ensure proper clearances and ring end gaps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons sized for 4.090\" bore\u003c\/li\u003e\n\u003cli\u003eWrist pins compatible with full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings (1.2mm top and second rings, 3mm oil ring)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts and engine builders upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram 6.4L 392 engines. It suits applications ranging from street performance to drag racing and road course use where increased durability and compression tuning are required. The versatility in compression ratios makes it suitable for various fuel types and forced induction setups.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381019099348,"sku":"1-6830-4090","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381019132116,"sku":"2-6830-4090","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381019164884,"sku":"3-6830-4090","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381019197652,"sku":"K1-6830-4090","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381019230420,"sku":"K2-6830-4090","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381019263188,"sku":"K3-6830-4090","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002053_4_7acf7aed-0c3f-4eb8-9b5a-0ad16b2125b7.webp?v=1771666996"},{"product_id":"6817-4125-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series +4cc Dome Top Forged Pistons: Fits Mopar Gen III Hemi 6.2L \/ 6.4L (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged +4cc Dome Top Pistons\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat, 6.4L 392 \u0026amp; Trackhawk\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6817-4125 \/ 2-6817-4125 \/ 3-6817-4125 \/ K1-6817-4125 \/ K2-6817-4125 \/ K3-6817-4125\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged +4cc Dome Top Pistons are precision-engineered components designed specifically for Mopar Gen III Hemi 6.2L and 6.4L engines. Featuring a 4.125\" bore size, these pistons offer a +4cc dome top design that enhances compression ratios and combustion efficiency. Ideal for performance enthusiasts and professional builders, these pistons provide a reliable upgrade for high-output applications, including Hellcat, 392, and Trackhawk engines.\u003c\/p\u003e\u003cp\u003eBuilt to withstand the rigors of high-performance use, these pistons support increased power and durability while maintaining tight tolerances for optimal engine balance and longevity. Whether you're building a street machine or a race-ready engine, DSS Racing FX Series pistons deliver the strength and precision needed for serious performance gains.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons incorporate advanced design and manufacturing techniques to ensure superior performance and reliability. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for exceptional strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003e+4cc dome top design to increase compression ratio and improve combustion\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.125\" bore Mopar Gen III Hemi 6.2L and 6.4L engines\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2\/1.2\/3mm to accommodate high-performance piston rings\u003c\/li\u003e\n\u003cli\u003eComp height of 1.12\" for precise deck clearance and piston-to-valve clearance\u003c\/li\u003e\n\u003cli\u003eDesigned for use with a 4.050\" stroke and 6.125\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression volumes (65cc, 74cc, 85cc) to tailor compression ratios from 10.88:1 up to 13.71:1\u003c\/li\u003e\n\u003cli\u003eOptimized dome shape for improved flame propagation and power output\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDSS Racing FX Series pistons are forged from high-grade aluminum alloy, providing an excellent balance of lightweight construction and structural integrity. The forging process enhances grain flow and material density, resulting in pistons that resist cracking, scuffing, and thermal fatigue. The dome top design increases the combustion chamber volume, allowing for higher compression ratios without compromising piston strength.\u003c\/p\u003e\u003cp\u003eEach piston is CNC-machined to exacting tolerances, ensuring consistent fitment and performance. The ring grooves are precision-cut to accommodate performance rings that maintain optimal sealing under extreme conditions. The option for full-floating or press-fit wrist pins allows builders to customize the piston assembly based on their specific engine build preferences.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are engineered as direct replacements for Chrysler, Dodge, Jeep, and Ram 6.4L 392, 6.2L Hellcat, and Trackhawk engines with a 4.125\" bore. Installation requires standard engine assembly procedures, and no major modifications are typically necessary when upgrading from factory pistons. Proper ring end gap and clearance measurements should be verified during installation to ensure optimal performance and longevity.\u003c\/p\u003e\u003cp\u003eDue to the +4cc dome design, these pistons slightly increase compression ratios, so tuning adjustments may be required to optimize engine management and prevent detonation. They are compatible with existing connecting rods and crankshaft stroke specifications listed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged +4cc dome top pistons (quantity as per SKU selection)\u003c\/li\u003e\n\u003cli\u003eWrist pins (full-floating or press-fit depending on configuration)\u003c\/li\u003e\n\u003cli\u003ePrecision-cut piston rings (1.2mm top and second rings, 3mm oil ring)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing FX Series pistons are ideal for performance engine builders, racers, and enthusiasts seeking to increase power output and reliability in Mopar Gen III Hemi 6.2L and 6.4L engines. They are well-suited for street performance upgrades, track use, and forced induction setups where enhanced compression and durability are critical. Builders looking to optimize combustion efficiency and engine response will benefit from the precision engineering and robust construction of these pistons.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381022179540,"sku":"1-6817-4125","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381022212308,"sku":"2-6817-4125","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381022245076,"sku":"3-6817-4125","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381022277844,"sku":"K1-6817-4125","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381022310612,"sku":"K2-6817-4125","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381022343380,"sku":"K3-6817-4125","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002041_4_d1df68b1-5215-49e2-82c4-bd4441ec4979.webp?v=1771666991"},{"product_id":"6817-4100-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-100-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Pistons: Fits Chrysler \/ Dodge \/ Jeep \/ Ram Gen III Hemi (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Pistons\u003c\/h3\u003e\u003cp\u003eFits Chrysler, Dodge, Jeep, Ram 6.2L Hellcat, 6.4L 392 \u0026amp; Trackhawk Gen III Hemi Engines\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6817-4100 \/ 2-6817-4100 \/ 3-6817-4100 \/ K1-6817-4100 \/ K2-6817-4100 \/ K3-6817-4100\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Pistons are precision-engineered performance components designed specifically for most Chrysler, Dodge, Jeep, and Ram Gen III Hemi engines, including the 6.2L Hellcat, 6.4L 392, and Trackhawk variants. Built to handle the extreme demands of high-performance and forced induction applications, these pistons provide enhanced strength, durability, and reliability over stock cast pistons.\u003c\/p\u003e\u003cp\u003eWith a 4.100\" bore size and a +4cc dome top, these pistons optimize combustion chamber volume and compression ratios, making them ideal for enthusiasts seeking to maximize power output while maintaining engine longevity. Whether you are building a street performance engine or a race-ready powerplant, the DSS Racing FX Series pistons deliver consistent quality and performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced design features to meet the rigorous needs of modern Hemi engines:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged 428 Small Block Mopar Hemi Gen III construction for superior strength\u003c\/li\u003e\n\u003cli\u003e+4cc dome top design to increase compression and optimize combustion\u003c\/li\u003e\n\u003cli\u003eCompact pin diameter of .927\" for reduced reciprocating mass\u003c\/li\u003e\n\u003cli\u003eAvailable in full-floating or press-fit wrist pin configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm\/1.2mm\/3mm for reliable ring sealing\u003c\/li\u003e\n\u003cli\u003eCompatible with a 4.050\" stroke and 6.125\" connecting rods\u003c\/li\u003e\n\u003cli\u003eCompression height of 1.12\" for precise piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003eDesigned to support a range of combustion chamber volumes (65cc, 74cc, 85cc) with corresponding compression ratios\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, providing an optimal balance of lightweight strength and thermal conductivity. The forging process enhances the metal grain structure, resulting in pistons that resist cracking, scuffing, and deformation under high cylinder pressures and temperatures.\u003c\/p\u003e\u003cp\u003eThe +4cc dome top is precision-machined to ensure consistent combustion chamber volume and promote efficient flame propagation. The pistons feature tight tolerances and carefully engineered ring grooves to maintain excellent ring seal and reduce blow-by. The option for full-floating or press-fit wrist pins allows builders to tailor the assembly to their specific application and durability requirements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed to fit most Chrysler, Dodge, Jeep, and Ram Gen III Hemi engines with 6.2L Hellcat, 6.4L 392, and Trackhawk configurations. Installation requires standard engine assembly procedures, including proper ring end gap setting and wrist pin installation based on the chosen configuration. No major modifications to the block or rods are typically necessary, making these pistons a direct upgrade for performance builds.\u003c\/p\u003e\u003cp\u003eBuilders should verify bore size and rod length compatibility (4.100\" bore, 6.125\" rod) to ensure proper fitment and piston-to-valve clearance. The pistons accommodate a 4.050\" stroke, matching common crankshaft specifications for these engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged DSS Racing FX Series pistons (quantity as per SKU selection)\u003c\/li\u003e\n\u003cli\u003eWrist pins (full-floating or press-fit depending on configuration)\u003c\/li\u003e\n\u003cli\u003eRetaining clips for wrist pins\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram Gen III Hemi engines. They are especially suited for applications involving forced induction, high compression naturally aspirated builds, and those requiring enhanced durability and strength over OEM pistons. Whether upgrading a Hellcat, 392 Hemi, or Trackhawk engine, these pistons provide a reliable foundation for increased horsepower and torque.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381022376148,"sku":"1-6817-4100","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381022408916,"sku":"2-6817-4100","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381022441684,"sku":"3-6817-4100","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381022474452,"sku":"K1-6817-4100","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381022507220,"sku":"K2-6817-4100","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381022539988,"sku":"K3-6817-4100","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002039_4_67c7718f-3adc-4f62-a38d-994b05fa09ff.webp?v=1771666991"},{"product_id":"6817-4090-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged +4cc Dome Top Pistons Set: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged +4cc Dome Top Pistons Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat \u0026amp; 6.4L 392 Gen III Hemi\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6817-4090 \/ 2-6817-4090 \/ 3-6817-4090 \/ K1-6817-4090 \/ K2-6817-4090 \/ K3-6817-4090\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged +4cc Dome Top Pistons Set is engineered specifically for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat and 6.4L 392 Gen III Hemi engines. Designed to enhance performance and reliability, these pistons are ideal for enthusiasts and professional builders seeking to maximize power output while maintaining engine durability. Featuring a +4cc dome top design, they offer increased compression ratios tailored to various combustion chamber sizes, making them a versatile upgrade for high-performance applications.\u003c\/p\u003e\u003cp\u003eThese pistons are precision-crafted to meet the demanding requirements of the 426 Small Block Mopar Hemi Gen III platform, ensuring optimal fitment and function. Whether building a street, track, or drag racing engine, the DSS Racing FX Series pistons provide a solid foundation for improved combustion efficiency and power gains.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEngineered for high-performance Mopar Gen III Hemi engines, these pistons deliver a combination of strength, precision, and enhanced combustion characteristics:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e+4cc dome top design to increase compression ratio and improve combustion efficiency\u003c\/li\u003e\n\u003cli\u003eComp height of 1.12\" optimized for Gen III Hemi applications\u003c\/li\u003e\n\u003cli\u003e.927\" pin diameter compatible with full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second grooves, 3mm oil ring groove for superior sealing\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.050\" stroke and 6.125\" connecting rods for precise engine geometry\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios from approximately 10.73:1 to 13.53:1\u003c\/li\u003e\n\u003cli\u003eManufactured by DSS Racing, a trusted name in high-performance forged components\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 and 6.2L Hellcat \u0026amp; Trackhawk engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are forged from premium-grade aluminum alloy, providing an excellent balance of strength, heat resistance, and lightweight characteristics essential for high-revving performance engines. The forging process ensures a dense, uniform grain structure that enhances durability under extreme combustion pressures and temperatures.\u003c\/p\u003e\u003cp\u003eThe dome top design increases the piston’s compression volume by +4cc, allowing for higher compression ratios that improve power and throttle response. Precision machining guarantees tight tolerances for optimal ring sealing and piston-to-wall clearance, reducing friction and wear. The pistons accommodate either full-floating or press-fit wrist pins, offering flexibility depending on engine build preferences.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed as direct replacements for the 426 Small Block Mopar Gen III Hemi engines found in Chrysler, Dodge, Jeep, and Ram vehicles equipped with 6.2L Hellcat and 6.4L 392 powerplants. Installation requires standard engine assembly procedures, with attention to proper ring end gap and piston orientation.\u003c\/p\u003e\u003cp\u003eDue to the +4cc dome volume, builders should verify combustion chamber volumes and adjust head gasket thickness or deck height as needed to achieve the desired compression ratio. No major modifications are typically required, making these pistons a straightforward upgrade for performance builds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged +4cc dome top pistons (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eWrist pins compatible with full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eRing groove machining for 1.2mm top and second rings, 3mm oil ring\u003c\/li\u003e\n\u003cli\u003eTechnical specifications and installation guidelines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram Gen III Hemi engines. It suits applications ranging from street performance to track and drag racing where increased compression and durability are critical. Builders seeking to extract maximum power from their 6.2L Hellcat or 6.4L 392 engines will benefit from the precision engineering and robust construction of DSS Racing’s FX Series pistons.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381023424724,"sku":"1-6817-4090","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381023457492,"sku":"2-6817-4090","price":769.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381023490260,"sku":"3-6817-4090","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023523028,"sku":"K1-6817-4090","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023555796,"sku":"K2-6817-4090","price":967.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023588564,"sku":"K3-6817-4090","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002038_4_db57d519-ab71-46a2-8e1f-0bedbf093f3a.webp?v=1771666990"},{"product_id":"6816-4125-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-23cc-dish-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Piston Set 4.125\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat \u0026amp; 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6816-4125 \/ 2-6816-4125 \/ 3-6816-4125 \/ K1-6816-4125 \/ K2-6816-4125 \/ K3-6816-4125\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat and 6.4L 392 engines. Designed to handle the extreme demands of boosted and naturally aspirated setups, these pistons offer enhanced strength and durability over stock components. Ideal for enthusiasts and professional builders seeking reliable, race-ready pistons that maintain OEM compatibility while delivering superior performance.\u003c\/p\u003e\u003cp\u003eThese pistons are specifically crafted for the 433 Small Block Mopar Hemi Gen III platform, featuring a 4.125\" bore size and a compact 1.12\" compression height. Their design supports both full-floating and press-fit wrist pins, providing flexibility for various engine builds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Pistons combine advanced engineering with precision manufacturing to meet the rigorous demands of high-output Mopar engines. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged from high-strength aluminum alloy for maximum durability and heat resistance\u003c\/li\u003e\n\u003cli\u003e4.125\" bore diameter optimized for 6.2L Hellcat and 6.4L 392 engine blocks\u003c\/li\u003e\n\u003cli\u003eCompact 1.12\" compression height for improved piston-to-cylinder clearance\u003c\/li\u003e\n\u003cli\u003e23cc dish top design to control compression ratio and support forced induction\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm\/1.2mm\/3mm for reliable ring sealing and reduced friction\u003c\/li\u003e\n\u003cli\u003eCompatible with both full-floating and press-fit wrist pins (.927\" pin diameter)\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 4.050\" and connecting rod length of 6.125\" for balanced engine geometry\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes (65cc, 74cc, 85cc) to tailor compression ratios from 10.17:1 down to 8.6:1\u003c\/li\u003e\n\u003cli\u003ePrecision CNC machining ensures tight tolerances and consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the FX Series is forged from premium-grade aluminum alloy, delivering exceptional strength-to-weight ratio and thermal conductivity. The forging process enhances grain structure, resulting in pistons that resist cracking and deformation under high cylinder pressures and temperatures. The dish top design reduces compression ratio to accommodate boost levels typical of Hellcat and 392 engine builds, while maintaining efficient combustion chamber dynamics.\u003c\/p\u003e\u003cp\u003eThe pistons feature a carefully engineered ring groove profile to optimize ring seal and minimize blow-by, contributing to improved engine efficiency and longevity. The wrist pin bore supports either full-floating or press-fit configurations, allowing builders to customize assembly based on application requirements. Overall, the design balances durability, weight savings, and compatibility with factory components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Pistons are direct fit replacements for most Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and 6.4L 392 engines. Installation requires standard engine rebuild procedures, including proper honing and cleaning of the cylinder bores. These pistons are compatible with the stock stroke of 4.050\" and connecting rod length of 6.125\", ensuring seamless integration with existing rotating assemblies.\u003c\/p\u003e\u003cp\u003eBuilders should verify ring end gaps and wrist pin fitment during assembly. No major modifications to the engine block or components are typically necessary, making these pistons an excellent upgrade for performance builds ranging from street to track applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons (quantity as per kit selection)\u003c\/li\u003e\n\u003cli\u003eWrist pins compatible with full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings (1.2mm top and second rings, 3mm oil ring)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding Chrysler, Dodge, Jeep, and Ram vehicles powered by the 6.2L Hellcat or 6.4L 392 engines. Whether building a boosted street machine, a track-focused race car, or a high-output naturally aspirated engine, these pistons provide the strength, reliability, and precision needed to maximize power and durability.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381022834900,"sku":"1-6816-4125","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381022867668,"sku":"2-6816-4125","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381022900436,"sku":"3-6816-4125","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381022933204,"sku":"K1-6816-4125","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381022965972,"sku":"K2-6816-4125","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381022998740,"sku":"K3-6816-4125","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002037_4_90e0079a-1af0-4f9f-a96a-12afc445320b.webp?v=1771666990"},{"product_id":"6816-4100-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-23cc-dish-top-gen-iii-hemi-forged-piston-set-4-100-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Piston Set 4.100\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat \u0026amp; 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6816-4100 \/ 2-6816-4100 \/ 3-6816-4100 \/ K1-6816-4100 \/ K2-6816-4100 \/ K3-6816-4100\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat and 6.4L 392 engines. Designed to handle the extreme demands of boosted and naturally aspirated setups, these pistons offer superior strength, durability, and precision fitment. Ideal for enthusiasts and professional builders aiming to maximize engine reliability and power output, this piston set ensures consistent performance under high stress.\u003c\/p\u003e\u003cp\u003eWith a 4.100\" bore size and compatibility with popular Mopar Hemi Gen III platforms, these pistons provide an excellent foundation for engine builds requiring forged components that maintain OEM-style dimensions and clearances.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Pistons combine advanced engineering and quality materials to deliver outstanding performance and longevity. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for enhanced strength and durability under high boost and high RPM conditions\u003c\/li\u003e\n\u003cli\u003e4.100\" bore size designed to fit most Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat and 6.4L 392 engines\u003c\/li\u003e\n\u003cli\u003eCompensated dish top design with -23cc volume for optimized compression ratios\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" compatible with full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm for reliable ring sealing and reduced friction\u003c\/li\u003e\n\u003cli\u003eCompatible with 6.125\" connecting rods and 4.050\" stroke engines\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes (65cc, 74cc, 85cc) to tailor compression ratios from approximately 8.51 to 10.07\u003c\/li\u003e\n\u003cli\u003ePrecision CNC machining ensures tight tolerances and consistent piston geometry\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for 428 Small Block Mopar Hemi Gen III engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are crafted from high-grade forged aluminum alloy, providing an optimal balance of lightweight strength and thermal conductivity. The forging process enhances grain structure, resulting in superior fatigue resistance and toughness compared to cast pistons. The dish top design with a -23cc volume helps control compression ratios, improving detonation resistance and combustion efficiency.\u003c\/p\u003e\u003cp\u003eThe piston pin bore is engineered to accept either full-floating or press-fit pins, offering flexibility depending on engine build preferences. Ring grooves are precision-machined to accommodate performance ring sets, ensuring excellent sealing and reduced blow-by. The pistons are designed to maintain OEM-style dimensions for straightforward installation without extensive modifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed to fit most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat and 6.4L 392 engines, including popular models such as the Hellcat Charger, Challenger, Jeep Trackhawk, and Ram 1500 TRX. Installation requires standard engine assembly procedures and is compatible with existing 6.125\" connecting rods and 4.050\" stroke crankshafts.\u003c\/p\u003e\u003cp\u003eBuilders should verify clearances and ring end gaps during assembly to ensure optimal performance and longevity. These pistons are suitable for both full rebuilds and performance upgrades where forged components are desired for increased durability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons (quantity as required for engine configuration)\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston pins (full-floating or press-fit depending on selection)\u003c\/li\u003e\n\u003cli\u003eRing grooves prepared for standard performance ring sets\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is ideal for performance enthusiasts, professional engine builders, and racers seeking reliable, high-strength pistons for Mopar 6.2L Hellcat and 6.4L 392 engine builds. Whether upgrading a street machine, track car, or off-road vehicle, these pistons provide the durability and precision needed to handle increased power levels and demanding conditions.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381023031508,"sku":"1-6816-4100","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381023064276,"sku":"2-6816-4100","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381023097044,"sku":"3-6816-4100","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023129812,"sku":"K1-6816-4100","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023162580,"sku":"K2-6816-4100","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023195348,"sku":"K3-6816-4100","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002036_4_c94ebaa3-1c26-4202-a9d6-0b8ee6ddbcb1.webp?v=1771666989"},{"product_id":"6816-4090-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-23cc-dish-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Piston Set 4.090\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler, Dodge, Jeep, Ram 6.2L Hellcat \u0026amp; 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6816-4090 \/ 2-6816-4090 \/ 3-6816-4090 \/ K1-6816-4090 \/ K2-6816-4090 \/ K3-6816-4090\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat and 6.4L 392 engines. Designed to handle the extreme demands of boosted and naturally aspirated setups, these pistons offer exceptional strength and durability for enthusiasts and professional builders alike. Whether upgrading for street performance, track use, or serious racing, this piston set delivers reliable power and efficiency improvements.\u003c\/p\u003e\u003cp\u003eBuilt to exacting standards, the FX Series pistons feature a forged construction that ensures superior resistance to heat and stress compared to stock cast pistons. Their precise dimensions and design optimize combustion efficiency and compression ratios, contributing to enhanced engine response and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons incorporate advanced engineering to meet the rigorous requirements of Mopar’s 426 Small Block Hemi Gen III engines. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for maximum strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003e4.090\" bore size, compatible with most Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and 6.4L 392 engines\u003c\/li\u003e\n\u003cli\u003eComp height of 1.12\" for optimal piston-to-head clearance and performance\u003c\/li\u003e\n\u003cli\u003e23cc dish top design to control compression and support various combustion chamber volumes\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter with options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2\/1.2\/3mm for reliable sealing and reduced friction\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 4.050\" and connecting rod length of 6.125\" for balanced engine geometry\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes (65cc, 74cc, 85cc) to achieve approximate compression ratios ranging from 8.48 to 10.03\u003c\/li\u003e\n\u003cli\u003ePrecision machining for consistent fit and finish, ensuring smooth engine operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, providing an excellent strength-to-weight ratio essential for high-performance engines. The forging process enhances the metal’s grain structure, resulting in pistons that resist cracking, deformation, and thermal fatigue even under extreme combustion pressures.\u003c\/p\u003e\u003cp\u003eThe piston crown features a carefully engineered dish design that helps manage compression ratios and combustion dynamics, optimizing power output and engine efficiency. The wrist pin bore is reinforced to accommodate either full-floating or press-fit pins, allowing builders flexibility based on their specific engine build preferences.\u003c\/p\u003e\u003cp\u003eRing grooves are precision-cut to maintain optimal ring seal and reduce blow-by, contributing to improved oil control and longevity. The overall design balances durability with lightweight construction to reduce reciprocating mass and improve throttle response.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct fit for most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat and 6.4L 392 engines, including popular models such as the Dodge Challenger, Charger, Jeep Grand Cherokee Trackhawk, and Ram 1500 TRX. Installation requires standard engine rebuild procedures and may involve professional machining to ensure proper clearances and ring end gaps.\u003c\/p\u003e\u003cp\u003eBuilders should verify compatibility with their specific engine configuration, including stroke and rod length, to ensure optimal performance and reliability. The pistons support both full-floating and press-fit wrist pin options, providing versatility for different assembly preferences.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons sized for 4.090\" bore\u003c\/li\u003e\n\u003cli\u003eWrist pin options (full-floating or press-fit)\u003c\/li\u003e\n\u003cli\u003ePrecision-cut ring grooves ready for piston rings (rings sold separately)\u003c\/li\u003e\n\u003cli\u003eTechnical specifications and installation guidelines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers seeking to upgrade or rebuild their Mopar 6.2L Hellcat or 6.4L 392 engines. It suits applications ranging from street performance and drag racing to road course and off-road use, providing a reliable foundation for increased power and durability.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381023228116,"sku":"1-6816-4090","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381023260884,"sku":"2-6816-4090","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381023293652,"sku":"3-6816-4090","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023326420,"sku":"K1-6816-4090","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023359188,"sku":"K2-6816-4090","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023391956,"sku":"K3-6816-4090","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002035_4_e83fbb55-b75b-491e-b887-ae51590ea454.webp?v=1771666989"},{"product_id":"6815-4125-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Piston Set 4.125\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 \/ 6.2L Hellcat \u0026amp; Trackhawk\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6815-4125 \/ 2-6815-4125 \/ 3-6815-4125 \/ K1-6815-4125 \/ K2-6815-4125 \/ K3-6815-4125\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered for high-performance applications in Mopar Gen III Hemi engines, specifically designed to fit 6.2L Hellcat, 6.4L 392, and Trackhawk models. These pistons are crafted to withstand the extreme demands of boosted and naturally aspirated setups, offering enhanced strength and durability over stock components. Ideal for enthusiasts and professional builders aiming to maximize engine reliability and power output, this piston set ensures consistent performance under high stress.\u003c\/p\u003e\u003cp\u003eWith a bore size of 4.125 inches and a compression height of 1.12 inches, these pistons provide a precise fit for the 433 Small Block Mopar Hemi Gen III platform. The design incorporates a -18cc dish top to optimize combustion chamber volume and compression ratios, supporting a range of build configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDesigned with performance and reliability in mind, the DSS Racing FX Series pistons offer the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for superior strength and resistance to detonation\u003c\/li\u003e\n\u003cli\u003e1.2mm\/1.2mm\/3mm ring grooves compatible with full-floating or press-fit pins\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927 inches for enhanced wrist pin stability\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 4.050 inches and connecting rod length of 6.125 inches\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes (-18cc) to achieve approximate compression ratios of 10.67:1, 9.8:1, and 8.94:1 depending on combustion chamber size\u003c\/li\u003e\n\u003cli\u003ePrecision-machined for optimal piston-to-wall clearance and ring seal\u003c\/li\u003e\n\u003cli\u003eCompatible with Mopar Gen III Hemi 6.2L Hellcat, 6.4L 392, and Trackhawk engines\u003c\/li\u003e\n\u003cli\u003eDesigned to handle high horsepower and torque applications including forced induction\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FX Series pistons are forged from high-grade aluminum alloy, providing an excellent balance of lightweight design and structural integrity. The forging process enhances grain structure, resulting in pistons that resist cracking and deformation under high thermal and mechanical loads. The dish top design reduces compression volume by 18cc, allowing for fine-tuning of compression ratios to suit various engine builds and fuel types.\u003c\/p\u003e\u003cp\u003eEach piston features precision-machined ring grooves sized at 1.2mm for the top and second rings, and 3mm for the oil ring, ensuring optimal ring seating and oil control. The wrist pin bore supports either full-floating or press-fit pins, offering flexibility depending on engine assembly preferences. The pistons are engineered to maintain tight tolerances for bore and stroke compatibility, ensuring reliable operation in high-performance Mopar Gen III Hemi engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed for direct fitment in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.4L 392 Hemi, 6.2L Hellcat, and Trackhawk engines. Installation requires standard engine assembly procedures, including proper ring end gap setting and piston orientation. Due to the forged construction and precise dimensions, these pistons are suitable for both rebuilds and performance upgrades without the need for extensive modifications.\u003c\/p\u003e\u003cp\u003eBuilders should verify compatibility with their specific engine build, including bore size and compression chamber volume, to ensure optimal performance and reliability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged aluminum pistons with 4.125\" bore diameter\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings (1.2\/1.2\/3mm groove sizes)\u003c\/li\u003e\n\u003cli\u003eWrist pin bore compatible with full-floating or press-fit pins\u003c\/li\u003e\n\u003cli\u003eTechnical specifications and installation guidelines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is ideal for performance enthusiasts, professional engine builders, and racers who demand durability and precision from their Mopar Gen III Hemi engines. Whether upgrading a Hellcat, 392, or Trackhawk for street, strip, or off-road use, these pistons provide the strength and design features necessary to support high horsepower and torque levels while maintaining engine reliability.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381023817940,"sku":"1-6815-4125","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381023850708,"sku":"2-6815-4125","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381023883476,"sku":"3-6815-4125","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023916244,"sku":"K1-6815-4125","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023949012,"sku":"K2-6815-4125","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023981780,"sku":"K3-6815-4125","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002034_4_b92f6dbc-db75-4107-bdc4-1676a6d4bff5.webp?v=1771666988"},{"product_id":"6815-4090-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Piston Set 4.090\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L \u0026amp; 6.4L Gen III Hemi Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6815-4090 \/ 2-6815-4090 \/ 3-6815-4090 \/ K1-6815-4090 \/ K2-6815-4090 \/ K3-6815-4090\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat, 6.4L 392, and other Gen III Hemi engines. Designed to handle the extreme demands of boosted and naturally aspirated setups, these pistons offer superior strength and durability compared to stock cast components. Whether you’re building a street performance engine or a race-ready powerplant, these forged pistons provide the reliability and precision needed to maximize power and efficiency.\u003c\/p\u003e\u003cp\u003eWith a 4.090\" bore size and a compact dish top design, the FX Series pistons optimize combustion chamber volume for improved compression ratios and combustion efficiency. They are ideal for enthusiasts and professional builders seeking to upgrade their engine internals for enhanced performance and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing forged pistons incorporate advanced design and manufacturing techniques to deliver exceptional performance and durability. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged 426 Small Block Mopar Hemi Gen III construction for maximum strength\u003c\/li\u003e\n\u003cli\u003e4.090\" bore size compatible with most 6.2L and 6.4L Gen III Hemi engines\u003c\/li\u003e\n\u003cli\u003eComp height of 1.12\" for precise piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003e18cc dish top design to optimize combustion chamber volume and compression ratio\u003c\/li\u003e\n\u003cli\u003e.927\" pin diameter with options for full-floating or press-fit wrist pins\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2\/1.2\/3mm for reliable ring sealing and reduced friction\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 4.050\" and connecting rod length of 6.125\" for balanced engine geometry\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes (65cc, 74cc, 85cc) to achieve approximate compression ratios from 8.82 to 10.53\u003c\/li\u003e\n\u003cli\u003ePrecision CNC machining ensures tight tolerances and consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the FX Series is forged from high-grade aluminum alloy, providing an optimal balance of lightweight strength and thermal conductivity. The forging process enhances the grain structure of the metal, resulting in superior fatigue resistance and durability under high-stress conditions. The pistons feature a carefully engineered dish top design with a -18cc volume to fine-tune combustion chamber characteristics and compression ratios, supporting a range of engine builds from street to race.\u003c\/p\u003e\u003cp\u003eThe wrist pin bore is designed to accept either full-floating or press-fit pins, allowing builders flexibility based on their application and performance goals. Ring grooves are precision-machined to accommodate performance ring sets, ensuring excellent sealing and reduced blow-by. Overall, the FX Series pistons are built to withstand the rigors of boosted, high-horsepower, and high-RPM operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is designed as a direct fit for most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat, 6.4L 392, and other Gen III Hemi engines. Installation requires standard engine assembly procedures, including proper ring end gap setting, wrist pin installation, and piston orientation. These pistons are compatible with a 4.090\" bore and a 4.050\" stroke, matching factory or aftermarket crankshafts and rods with a 6.125\" length.\u003c\/p\u003e\u003cp\u003eBuilders should verify clearances and compression ratios based on their specific cylinder head and gasket combinations. No major modifications are typically required, making these pistons an excellent upgrade for performance rebuilds or engine swaps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons (quantity as per kit selection)\u003c\/li\u003e\n\u003cli\u003eWrist pins (full-floating or press-fit options depending on SKU)\u003c\/li\u003e\n\u003cli\u003eSnap rings for wrist pin retention\u003c\/li\u003e\n\u003cli\u003eDetailed specifications and installation guidelines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is ideal for automotive enthusiasts, professional engine builders, and racers seeking to upgrade the internals of their Gen III Hemi engines. These pistons are well-suited for high-performance street vehicles, drag racing, road racing, and any application demanding enhanced strength, reliability, and optimized compression. Whether upgrading a Hellcat, 392, or other 6.2L\/6.4L Mopar Hemi, these pistons provide a solid foundation for increased power and engine longevity.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381024014548,"sku":"1-6815-4090","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381024047316,"sku":"2-6815-4090","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381024080084,"sku":"3-6815-4090","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381024112852,"sku":"K1-6815-4090","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381024145620,"sku":"K2-6815-4090","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381024178388,"sku":"K3-6815-4090","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002033_4_3cd00b17-8b82-4917-a47b-630a7c2272a7.webp?v=1771666988"},{"product_id":"6811-4125-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-7cc-dish-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Piston Set 4.125\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler, Dodge, Jeep, Ram 6.2L Hellcat, 6.4L 392 \u0026amp; Trackhawk Gen III Hemi\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6811-4125 \/ 2-6811-4125 \/ 3-6811-4125 \/ K1-6811-4125 \/ K2-6811-4125 \/ K3-6811-4125\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat, 6.4L 392, and Trackhawk Gen III Hemi engines. Designed to handle the extreme demands of boosted and naturally aspirated builds, these pistons offer exceptional strength, durability, and precision fitment. Ideal for enthusiasts and professional builders seeking to maximize engine reliability and power output, this piston set delivers uncompromising quality and performance.\u003c\/p\u003e\u003cp\u003eWith a 4.125\" bore size and a compact 1.12\" compression height, these pistons are optimized for improved combustion efficiency and reduced reciprocating mass. The -7cc dish top design supports a variety of compression ratios, making them versatile for different tuning and fuel setups.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt to exacting standards, the DSS Racing FX Series pistons incorporate advanced design elements to enhance engine performance and longevity:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged from high-strength aluminum alloy for superior durability and heat resistance\u003c\/li\u003e\n\u003cli\u003e4.125\" bore diameter compatible with most Gen III Hemi 6.2L and 6.4L engines\u003c\/li\u003e\n\u003cli\u003e7cc dish top for optimized combustion chamber volume and compression ratio tuning\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm\/1.2mm\/3mm to accommodate high-performance piston rings\u003c\/li\u003e\n\u003cli\u003eCompact 1.12\" compression height to maintain proper piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003eDesigned for use with a 4.050\" stroke crankshaft and 6.125\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes (65cc, 74cc, 85cc) to achieve compression ratios ranging from 9.8:1 to 11.98:1\u003c\/li\u003e\n\u003cli\u003ePrecision CNC machining ensures tight tolerances and consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are forged from premium-grade aluminum alloy, providing an ideal balance of strength, weight, and thermal conductivity. This material choice allows the pistons to withstand the high cylinder pressures and temperatures typical of boosted and high-output naturally aspirated engines. The forged construction enhances fatigue resistance and reduces the risk of cracking under extreme conditions.\u003c\/p\u003e\u003cp\u003eEach piston features a carefully engineered dish top design that reduces compression volume while maintaining optimal flame propagation characteristics. The pin bore is reinforced to accommodate either full-floating or press-fit wrist pins, offering flexibility depending on engine build preferences. The ring grooves are precision cut to accept high-performance ring sets, ensuring effective sealing and minimal blow-by.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct replacement for most Chrysler, Dodge, Jeep, and Ram Gen III Hemi 6.2L Hellcat, 6.4L 392, and Trackhawk engines with a 4.125\" bore. Installation requires standard engine assembly procedures, including proper ring end gap setting and piston orientation. Depending on the wrist pin choice, either full-floating or press-fit installation methods can be employed. No major modifications to the block or rotating assembly are typically necessary, making these pistons a straightforward upgrade for performance builds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons with -7cc dish top\u003c\/li\u003e\n\u003cli\u003ePrecision-machined wrist pin bores (.927\") compatible with full-floating or press-fit pins\u003c\/li\u003e\n\u003cli\u003eRing grooves sized for 1.2mm top and second rings, 3mm oil ring\u003c\/li\u003e\n\u003cli\u003eDetailed specifications and installation guidelines\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding their Gen III Hemi 6.2L or 6.4L engines. Whether building a boosted Hellcat, a naturally aspirated 392, or a high-output Trackhawk, these pistons provide the strength and precision needed to support increased horsepower and torque while maintaining reliability under demanding conditions.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381024211156,"sku":"1-6811-4125","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381024243924,"sku":"2-6811-4125","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381024276692,"sku":"3-6811-4125","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381024309460,"sku":"K1-6811-4125","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381024342228,"sku":"K2-6811-4125","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381024374996,"sku":"K3-6811-4125","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002032_4_32685123-5b33-45b9-af33-585a20073330.webp?v=1771666987"},{"product_id":"6815-4100-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-100-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Piston Set 4.100\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat \u0026amp; 6.4L Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6815-4100 \/ 2-6815-4100 \/ 3-6815-4100 \/ K1-6815-4100 \/ K2-6815-4100 \/ K3-6815-4100\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat and 6.4L 392 HEMI engines. Designed specifically for the 428 Small Block Mopar HEMI Gen III platform, these pistons offer a perfect balance of strength, durability, and precision fitment. Whether you're building a street machine, a track car, or a high-output daily driver, these forged pistons provide the reliability and performance needed to handle increased power and boost levels.\u003c\/p\u003e\u003cp\u003eWith a bore size of 4.100\", these pistons are optimized for engines with a 4.050\" stroke and 6.125\" rod length, delivering consistent combustion chamber volumes and compression ratios tailored for various performance setups. The FX Series pistons are ideal for enthusiasts and professional builders seeking to upgrade their engine internals with components that maintain OEM compatibility while enhancing strength and thermal resistance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt to meet the demands of high-performance Mopar engines, the DSS Racing FX Series Forged Pistons include the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePrecision forged from high-strength aluminum alloy for superior durability and weight savings\u003c\/li\u003e\n\u003cli\u003eCompensated dish top design with -18cc dish volume to optimize combustion chamber shape and compression\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" compatible with full-floating or press-fit wrist pins\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm\/1.2mm\/3mm to accommodate performance ring sets\u003c\/li\u003e\n\u003cli\u003eCompression heights of 1.12\" for proper deck clearance and piston-to-valve clearance\u003c\/li\u003e\n\u003cli\u003eDesigned for 4.100\" bore applications, matching factory and aftermarket cylinder bore sizes\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.050\" stroke crankshafts and 6.125\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes (65cc, 74cc, 85cc) to achieve approximate compression ratios ranging from 8.86 to 10.57\u003c\/li\u003e\n\u003cli\u003eEngineered for use in 6.2L Hellcat, 6.4L 392, and Trackhawk engines for Chrysler, Dodge, Jeep, and Ram models\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are crafted using advanced forging techniques that enhance the metal grain structure, resulting in pistons that withstand extreme combustion pressures and temperatures. The aluminum alloy used is lightweight yet incredibly strong, reducing reciprocating mass and improving engine response. The dish top design with a -18cc volume helps control compression and combustion characteristics, making these pistons suitable for forced induction or naturally aspirated setups.\u003c\/p\u003e\u003cp\u003eEach piston features precision-machined ring grooves to ensure optimal ring seal and reduced friction. The wrist pin bore is engineered for either full-floating or press-fit pins, providing flexibility depending on your engine build preferences. The pistons are designed to maintain tight tolerances for bore size and compression height, ensuring a perfect fit and reliable performance in high-stress environments.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are direct fit replacements for most Chrysler, Dodge, Jeep, and Ram engines with 6.2L Hellcat and 6.4L 392 HEMI configurations. Installation requires standard engine assembly procedures, including proper honing of cylinder bores to 4.100\" and careful measurement of piston-to-wall clearance. The pistons are compatible with factory or aftermarket connecting rods measuring 6.125\" in length and crankshafts with a 4.050\" stroke.\u003c\/p\u003e\u003cp\u003eBuilders should verify compression ratios based on their specific combustion chamber volumes and gasket thicknesses, as the pistons come in various dish volumes to accommodate different setups. Professional installation is recommended to ensure optimal engine performance and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eSpecifications for bore size, compression height, and ring groove dimensions\u003c\/li\u003e\n\u003cli\u003eTechnical data sheet with piston dimensions and recommended clearances\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers upgrading or rebuilding Chrysler, Dodge, Jeep, and Ram HEMI engines. It suits applications ranging from street performance and drag racing to road course and off-road use, especially where increased power and durability are required. The DSS Racing FX Series pistons provide a reliable foundation for forced induction builds, high compression naturally aspirated engines, and any project demanding robust internal components.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381023621332,"sku":"1-6815-4100","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381023654100,"sku":"2-6815-4100","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381023686868,"sku":"3-6815-4100","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023719636,"sku":"K1-6815-4100","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023752404,"sku":"K2-6815-4100","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381023785172,"sku":"K3-6815-4100","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002031_4_27669209-c8b1-4973-8fd2-3c2d03cc2898.webp?v=1771666987"},{"product_id":"6811-4100-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-7cc-dish-top-gen-iii-hemi-forged-piston-set-4-100-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Piston Set 4.100\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 \/ 6.2L Hellcat \u0026amp; Trackhawk\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6811-4100 \/ 2-6811-4100 \/ 3-6811-4100 \/ K1-6811-4100 \/ K2-6811-4100 \/ K3-6811-4100\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for Mopar Gen III Hemi 6.2L and 6.4L Hellcat and Trackhawk engines. Designed to accommodate a 4.100\" bore, these pistons deliver exceptional strength and durability for high-performance applications. Whether you're building a street machine or a track-ready powerhouse, this piston set offers the reliability and precision needed to handle increased power and boost levels.\u003c\/p\u003e\u003cp\u003eThese pistons feature a compact dish top design with a -7cc volume, optimized for efficient combustion and improved compression ratios. The set is ideal for enthusiasts and professional builders seeking to upgrade their engine internals with components that maintain factory dimensions while enhancing performance potential.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt to meet the demands of high-output Mopar engines, the DSS Racing FX Series pistons include several advanced features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for superior strength and fatigue resistance\u003c\/li\u003e\n\u003cli\u003e4.100\" bore size compatible with Mopar Gen III Hemi 6.2L and 6.4L engines\u003c\/li\u003e\n\u003cli\u003eCompact dish top with -7cc volume for optimized combustion chamber dynamics\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" supporting full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm for reliable ring sealing\u003c\/li\u003e\n\u003cli\u003eCompatible with a 4.050\" stroke and 6.125\" connecting rod length\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios ranging from 9.71:1 to 11.87:1 depending on combustion chamber volume\u003c\/li\u003e\n\u003cli\u003eDesigned for 428 Small Block Mopar Hemi Gen III applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FX Series pistons are crafted from high-grade forged aluminum alloy, providing an optimal balance of lightweight design and exceptional strength. The forging process enhances grain structure, resulting in improved resistance to thermal and mechanical stress. The pistons feature a precision-machined dish top with a -7cc volume to fine-tune compression ratios and promote efficient combustion.\u003c\/p\u003e\u003cp\u003eEach piston is engineered with a .927\" pin bore that supports either full-floating or press-fit wrist pins, allowing flexibility in assembly based on engine build preferences. The ring grooves are carefully cut to accommodate 1.2mm top and second rings with a 3mm oil ring, ensuring effective sealing and oil control under demanding conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct fit for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.4L 392 or 6.2L Hellcat and Trackhawk engines. Installation requires standard engine assembly procedures and may involve balancing and blueprinting for optimal performance. No major modifications to the block or rotating assembly are typically necessary, making these pistons an excellent upgrade for both rebuilds and performance builds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged aluminum pistons (quantity as required for engine configuration)\u003c\/li\u003e\n\u003cli\u003eSpecifications for pin size, ring groove dimensions, and compression ratios\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is ideal for performance enthusiasts, engine builders, and racers who demand durable, high-quality components for Mopar Gen III Hemi engines. Whether upgrading a Hellcat or Trackhawk for street, strip, or track use, these pistons provide the strength and precision needed to support increased power levels and boost pressures while maintaining reliable operation.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381024702676,"sku":"1-6811-4100","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381024735444,"sku":"2-6811-4100","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381024768212,"sku":"3-6811-4100","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381024800980,"sku":"K1-6811-4100","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381024833748,"sku":"K2-6811-4100","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381024866516,"sku":"K3-6811-4100","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002030_4_d3e5c4a9-fbbc-4bc8-89dc-150aa7cbcc6a.webp?v=1771666987"},{"product_id":"6810-4125-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Pistons Set 4.125\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Pistons\u003c\/h3\u003e\u003cp\u003eFits Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat \u0026amp; 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6810-4125 \/ 2-6810-4125 \/ 3-6810-4125 \/ K1-6810-4125 \/ K2-6810-4125 \/ K3-6810-4125\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Pistons are precision-engineered performance components designed specifically for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat and 6.4L 392 engines. These pistons are ideal for enthusiasts and professional builders seeking durable, high-strength pistons capable of handling increased power and demanding driving conditions. Crafted to exacting specifications, they provide excellent reliability and performance for both street and track applications.\u003c\/p\u003e\u003cp\u003eWith a 4.125\" bore size and compatibility with most 6.2L Hellcat and 6.4L 392 models, these pistons offer a direct fit solution that supports engine builds requiring forged internals. They are engineered to maintain optimal compression ratios and combustion efficiency, enhancing overall engine performance and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDesigned for high-performance Mopar HEMI engines, the DSS Racing FX Series Forged Pistons deliver a blend of strength, precision, and reliability. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged 4330 alloy construction for superior strength and durability\u003c\/li\u003e\n\u003cli\u003eCompensated piston height of 1.12\" for optimal deck clearance\u003c\/li\u003e\n\u003cli\u003e1.5cc flat top design to support various combustion chamber volumes\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm for reliable ring sealing\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.050\" stroke and 6.125\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volume options: 65cc, 74cc, and 85cc\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios ranging from 10.27:1 to 12.72:1 depending on chamber volume\u003c\/li\u003e\n\u003cli\u003ePrecision CNC machining ensures tight tolerances and consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are crafted from high-grade 4330 forged steel alloy, known for its exceptional strength-to-weight ratio and resistance to thermal and mechanical stress. This material choice ensures the pistons can withstand the extreme pressures and temperatures generated by high-output Hellcat and 392 engines.\u003c\/p\u003e\u003cp\u003eEach piston features a flat top design with a slight volume offset (-1.5cc) to optimize combustion efficiency and support various compression ratios. The wrist pin bore is engineered for either full-floating or press-fit installation, providing flexibility based on engine build preferences. Ring grooves are precisely cut to accommodate high-performance piston rings, ensuring excellent sealing and reduced blow-by.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed as direct replacements for most Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and 6.4L 392 engines, making installation straightforward for experienced engine builders. Proper engine assembly practices should be followed, including checking clearances and ring end gaps. Depending on the wrist pin configuration chosen, either full-floating or press-fit installation methods will be required.\u003c\/p\u003e\u003cp\u003eDue to the precision engineering and OEM compatibility, these pistons fit seamlessly into existing engine blocks without the need for extensive modifications, making them an excellent choice for performance upgrades or rebuilds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons with 4.125\" bore size\u003c\/li\u003e\n\u003cli\u003eWrist pins (.927\") compatible with full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for combustion chamber volume and compression ratios\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing FX Series Forged Pistons are ideal for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePerformance enthusiasts upgrading their Hellcat or 392 engines\u003c\/li\u003e\n\u003cli\u003eEngine builders seeking durable forged pistons for high-boost or high-horsepower applications\u003c\/li\u003e\n\u003cli\u003eTrack and street performance vehicles requiring reliable, high-strength internals\u003c\/li\u003e\n\u003cli\u003eRebuild projects aiming to restore or enhance engine durability and efficiency\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381024899284,"sku":"1-6810-4125","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381024932052,"sku":"2-6810-4125","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381024964820,"sku":"3-6810-4125","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381024997588,"sku":"K1-6810-4125","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381025030356,"sku":"K2-6810-4125","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381025063124,"sku":"K3-6810-4125","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002029_4_9e931afc-170a-4a9a-9803-04b995b6cdaa.webp?v=1771666986"},{"product_id":"6811-4090-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-7cc-dish-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Pistons Set 4.090\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (11-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Pistons\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat \u0026amp; 6.4L Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6811-4090 \/ 2-6811-4090 \/ 3-6811-4090 \/ K1-6811-4090 \/ K2-6811-4090 \/ K3-6811-4090\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Pistons are precision-engineered performance components designed to fit most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat and 6.4L engines. Crafted for enthusiasts and professional builders alike, these pistons offer a reliable upgrade for high-performance small block Mopar Hemi Gen III applications. With a 4.090\" bore size and a compact design, they provide enhanced strength and durability to withstand the rigors of boosted and naturally aspirated setups.\u003c\/p\u003e\u003cp\u003eThese pistons are ideal for those seeking to improve engine reliability and power potential while maintaining factory-like dimensions and compatibility. Whether building a street machine, track car, or drag racer, the DSS Racing FX Series pistons deliver consistent performance and long-term durability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEngineered for high-performance Mopar applications, these pistons incorporate advanced design elements to optimize strength, weight, and combustion efficiency.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged from premium billet aluminum for superior strength and heat resistance\u003c\/li\u003e\n\u003cli\u003e4.090\" bore diameter compatible with most 6.2L Hellcat and 6.4L 392 engines\u003c\/li\u003e\n\u003cli\u003eComp height of 1.12\" for precise deck clearance and optimal compression\u003c\/li\u003e\n\u003cli\u003e7cc dish top design to control compression ratio and reduce detonation risk\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm for reliable ring sealing and reduced friction\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 4.050\" and connecting rod length of 6.125\" for balanced piston speed and strength\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes (65cc, 74cc, 85cc) to tailor compression ratios from 9.67 to 11.82\u003c\/li\u003e\n\u003cli\u003eDesigned to fit the 426 Small Block Mopar Hemi Gen III platform with exacting tolerances\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are forged using high-grade aluminum alloys selected for their excellent strength-to-weight ratio and thermal conductivity. The forging process enhances the grain structure, resulting in pistons that resist cracking and deformation under extreme combustion pressures and temperatures. Each piston features a precision-machined dish top to optimize combustion chamber shape and compression ratio, improving power delivery and engine efficiency.\u003c\/p\u003e\u003cp\u003ePin bosses are engineered to accept either full-floating or press-fit wrist pins, providing flexibility for different engine builds and performance requirements. The ring grooves are carefully cut to accommodate performance ring sets, ensuring effective sealing and reduced blow-by. Overall, the design balances durability with lightweight construction to maximize engine responsiveness and longevity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed as direct replacements for most Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and 6.4L 392 engines, making installation straightforward for experienced engine builders. Minimal modifications are required when used with compatible rods and blocks. Proper ring end gap and piston-to-wall clearance should be checked during assembly to ensure optimal performance and reliability.\u003c\/p\u003e\u003cp\u003eWhether assembling a fresh build or upgrading an existing engine, these pistons fit seamlessly into the Gen III small block Mopar Hemi platform, supporting a variety of compression ratios and power levels.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of 8 DSS Racing FX Series forged pistons (4.090\" bore)\u003c\/li\u003e\n\u003cli\u003eWrist pin compatibility for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for dish volume and compression ratio options\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePerformance enthusiasts upgrading Hellcat and 392 Hemi engines\u003c\/li\u003e\n\u003cli\u003eEngine builders seeking durable forged pistons for boosted or naturally aspirated setups\u003c\/li\u003e\n\u003cli\u003eStreet, track, and drag racing applications requiring reliable high-performance components\u003c\/li\u003e\n\u003cli\u003eRebuilds and custom engine projects on Chrysler, Dodge, Jeep, and Ram platforms\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381025489108,"sku":"1-6811-4090","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381025521876,"sku":"2-6811-4090","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381025554644,"sku":"3-6811-4090","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381025587412,"sku":"K1-6811-4090","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381025620180,"sku":"K2-6811-4090","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381025652948,"sku":"K3-6811-4090","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002028_4_2ff9bfcc-7788-4924-ac4a-233af9fcc851.webp?v=1771666986"},{"product_id":"6810-4090-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Flat Top Pistons 4.090\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged Flat Top Pistons\u003c\/h3\u003e\u003cp\u003eFits Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 \/ 6.2L Hellcat \u0026amp; Trackhawk Gen III Hemi Engines\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6810-4090 \/ 2-6810-4090 \/ 3-6810-4090 \/ K1-6810-4090 \/ K2-6810-4090 \/ K3-6810-4090\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Flat Top Pistons are precision-engineered performance components designed specifically for most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat, 6.4L 392, and Trackhawk Gen III Hemi engines. These pistons are crafted to deliver exceptional strength and durability under high-stress conditions, making them ideal for enthusiasts seeking reliable power upgrades and engine longevity.\u003c\/p\u003e\u003cp\u003eBuilt to exacting specifications, these pistons feature a flat top design with a -1.5cc dish volume, optimizing combustion efficiency and compression ratios for improved performance. Whether you are building a high-performance street engine or a race-ready powerplant, the DSS Racing FX Series pistons provide the foundation for consistent, high-output operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEngineered for durability and performance, these pistons offer a range of advanced features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged from high-strength aluminum alloy for superior toughness and heat resistance\u003c\/li\u003e\n\u003cli\u003eFlat top piston design with -1.5cc dish volume to optimize combustion chamber dynamics\u003c\/li\u003e\n\u003cli\u003eComp height of 1.12\" for precise deck clearance and piston-to-head geometry\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm to accommodate high-performance piston rings\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.090\" bore applications and 4.050\" stroke crankshafts\u003c\/li\u003e\n\u003cli\u003eDesigned for use with 6.125\" connecting rods, matching factory and aftermarket setups\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression volumes (65cc, 74cc, 85cc) to tailor compression ratios from approximately 10.13:1 to 12.55:1\u003c\/li\u003e\n\u003cli\u003ePrecision CNC-machined for consistent fit and finish\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDSS Racing FX Series pistons are forged from premium aerospace-grade aluminum alloy, providing an optimal balance of lightweight strength and thermal conductivity. The forging process enhances the grain structure of the metal, resulting in pistons that resist cracking and deformation under extreme combustion pressures and temperatures.\u003c\/p\u003e\u003cp\u003eThe flat top design reduces quench distance and promotes efficient flame propagation, contributing to improved power output and fuel efficiency. The pistons are engineered with tight tolerances and feature robust ring lands and skirt profiles to minimize piston slap and wear during high-RPM operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed as direct replacements for most Chrysler, Dodge, Jeep, and Ram Gen III Hemi 6.2L and 6.4L engines, including Hellcat, 392, and Trackhawk models. Installation requires standard engine rebuild procedures, including proper honing of cylinder bores and precise ring end gap setting to ensure optimal sealing and longevity.\u003c\/p\u003e\u003cp\u003eDepending on the wrist pin configuration selected (full-floating or press-fit), minor adjustments to the connecting rods or pins may be necessary. It is recommended to consult with a professional engine builder to verify compatibility with your specific build and to achieve the best performance results.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of four DSS Racing FX Series Forged Flat Top Pistons (4.090\" bore size)\u003c\/li\u003e\n\u003cli\u003eWrist pins sized at .927\" with full-floating or press-fit options\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings compatible with 1.2\/1.2\/3mm groove dimensions (rings sold separately)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications sheet\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are ideal for performance enthusiasts and professional engine builders upgrading or rebuilding Chrysler, Dodge, Jeep, and Ram Gen III Hemi engines. They are well-suited for applications ranging from street performance and drag racing to off-road and track use, where enhanced strength, reliability, and compression tuning are critical.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381025292500,"sku":"1-6810-4090","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381025325268,"sku":"2-6810-4090","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381025358036,"sku":"3-6810-4090","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381025390804,"sku":"K1-6810-4090","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381025423572,"sku":"K2-6810-4090","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381025456340,"sku":"K3-6810-4090","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002027_4_9f9cccbf-3519-48cc-ad01-4ad144d3784b.webp?v=1771666985"},{"product_id":"6810-4100-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-100-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Flat Top Piston Set 4.100\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged Flat Top Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L-6.4L Gen III Hemi Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6810-4100 \/ 2-6810-4100 \/ 3-6810-4100 \/ K1-6810-4100 \/ K2-6810-4100 \/ K3-6810-4100\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Flat Top Piston Set is engineered for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat, 6.4L 392, and Trackhawk Gen III Hemi engines. Designed to fit a 4.100\" bore, these pistons offer a perfect balance of strength, durability, and precision for enthusiasts and professional builders seeking to maximize engine output and reliability.\u003c\/p\u003e\u003cp\u003eThese pistons are ideal for those upgrading or rebuilding their small block Mopar Hemi engines, providing enhanced combustion efficiency and improved compression ratios. Whether you’re building a street performance engine or a race-ready powerplant, the DSS Racing FX Series pistons deliver consistent performance under demanding conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt with advanced engineering and attention to detail, the FX Series pistons incorporate several features that optimize engine performance and longevity:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for superior strength and resistance to high stress\u003c\/li\u003e\n\u003cli\u003eFlat top design with a -1.5cc dish for optimized combustion chamber shape\u003c\/li\u003e\n\u003cli\u003eComp height of 1.12\" for precise deck clearance and piston-to-head fitment\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter with options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm top and second rings, and 3mm oil ring for effective sealing and oil control\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.050\" stroke crankshafts and 6.125\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios from 10.16:1 to 12.58:1\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for the Gen III Hemi architecture ensuring perfect fit and function\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series pistons are crafted from high-quality forged aluminum alloy, providing an excellent strength-to-weight ratio essential for high RPM and high load conditions. The forging process enhances the grain structure of the metal, resulting in pistons that resist cracking, scuffing, and thermal fatigue.\u003c\/p\u003e\u003cp\u003eThe flat top design with a slight dish (-1.5cc) optimizes combustion efficiency by promoting better flame propagation and reducing detonation risk. Precision machining ensures tight tolerances for piston-to-cylinder wall clearance and ring groove dimensions, contributing to improved sealing and reduced blow-by.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed to fit most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat, 6.4L 392, and Trackhawk Gen III Hemi engines. Installation requires standard engine rebuild procedures, including proper ring installation and wrist pin fitting, whether using full-floating or press-fit pins.\u003c\/p\u003e\u003cp\u003eBuilders should verify bore size compatibility (4.100\") and ensure that connecting rods and crankshaft stroke match the piston specifications for optimal performance and reliability. No major modifications are typically necessary when replacing stock pistons with this set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged flat top pistons (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eWrist pins sized at .927\" diameter\u003c\/li\u003e\n\u003cli\u003eRing grooves pre-machined for 1.2mm top and second rings, 3mm oil ring\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is perfect for performance enthusiasts, engine builders, and racers upgrading or rebuilding Gen III Hemi engines in Chrysler, Dodge, Jeep, and Ram vehicles. It suits applications ranging from street performance to track and drag racing, offering enhanced durability and compression options to meet various power goals.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381025095892,"sku":"1-6810-4100","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381025128660,"sku":"2-6810-4100","price":719.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins and Locs Without Rings","offer_id":47381025161428,"sku":"3-6810-4100","price":899.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381025194196,"sku":"K1-6810-4100","price":867.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381025226964,"sku":"K2-6810-4100","price":897.95,"currency_code":"USD","in_stock":true},{"title":"FX-3 2618 Alloy with Lateral Gas Ports - XR .225 Wall Pin Upgrade - Spiro Locs \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381025259732,"sku":"K3-6810-4100","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002025_4_d25c3190-ae40-444f-9d9b-a045ac733394.webp?v=1771666985"}],"url":"https:\/\/fasthemis.com\/collections\/dss-racing-pistons-for-jeep-wrangler-hemi.oembed?page=2","provider":"FastHemis","version":"1.0","type":"link"}