{"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","url":"https:\/\/fasthemis.com\/products\/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","provider":"FastHemis","version":"1.0","type":"link"}