{"product_id":"6845-4125-6-1-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: Fits Chrysler \/ Dodge \/ Jeep \/ Ram 6.1L SRT8","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.1L SRT8\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6845-4125D \/ 2-6845-4125D \/ 3-6845-4125D \/ K1-6845-4125D \/ K2-6845-4125D \/ K3-6845-4125D\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 6.1L SRT8 engines, delivering exceptional strength and durability for high-performance applications. Designed to fit a 4.125\" bore, these pistons are ideal for enthusiasts and professional builders seeking reliable, precision-crafted components for their 383 Small Block Mopar Hemi Gen III builds.\u003c\/p\u003e\u003cp\u003eWith a compact dish top design and a compression height of 1.21 inches, these pistons optimize combustion efficiency while maintaining compatibility with factory and aftermarket components. Whether you are upgrading for increased power, durability, or engine longevity, the DSS Racing FX Series pistons provide a solid foundation for your performance build.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced design elements to meet the demands of high-output Mopar engines:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 4.125\" bore size, tailored for 6.1L SRT8 engines\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and heat resistance\u003c\/li\u003e\n\u003cli\u003eCompact dish top with -18cc volume to optimize compression ratios\u003c\/li\u003e\n\u003cli\u003eCompression height of 1.21 inches for precise piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" 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\u003c\/li\u003e\n\u003cli\u003eDesigned for 3.578\" stroke and 6.243\" connecting rods\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios vary by combustion chamber volume: 9.55:1 (65cc), 8.78:1 (74cc), 8.02:1 (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 crafted from high-quality forged aluminum alloy, providing an optimal balance of lightweight strength and thermal conductivity. The forging process enhances grain structure and durability, allowing these pistons to withstand the rigors of high-performance and forced induction applications.\u003c\/p\u003e\u003cp\u003eThe pistons feature a carefully engineered dish top design with a -18cc volume to accommodate various combustion chamber sizes and compression ratios. Precision-machined ring grooves ensure proper sealing and reduced friction, while the choice of full-floating or press-fit wrist pins allows customization based 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 most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 engines with a 4.125\" bore. Installation requires standard engine assembly procedures, and compatibility with factory rods and crankshafts is maintained. Builders should verify clearances and ring end gaps during assembly 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 four DSS Racing FX Series forged pistons\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 ready for standard 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 6.1L SRT8 engines. Whether building a street performance engine, a track-ready machine, or a reliable high-output powerplant, these forged pistons offer the strength and design features necessary to support increased horsepower and torque demands.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381006778580,"sku":"1-6845-4125D","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381006811348,"sku":"2-6845-4125D","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":47381006844116,"sku":"3-6845-4125D","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":47381006876884,"sku":"K1-6845-4125D","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":47381006909652,"sku":"K2-6845-4125D","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":47381006942420,"sku":"K3-6845-4125D","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002104_4_76445e9c-0ada-4e1d-8e96-d16db1f2c0e0.webp?v=1771667017","url":"https:\/\/fasthemis.com\/products\/6845-4125-6-1-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","provider":"FastHemis","version":"1.0","type":"link"}