{"product_id":"6720-3947-5-7-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-3-947-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing Gen III Hemi FX Series Forged Piston Set 5.7L: Fits Chrysler \/ Dodge \/ Jeep \/ Ram (02-26)","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 5.7L Hemi Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6720-3947 \/ 2-6720-3947 \/ 3-6720-3947 \/ K1-6720-3947 \/ K2-6720-3947 \/ K3-6720-3947\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 5.7L Hemi engines found in a wide range of Chrysler, Dodge, Jeep, and Ram vehicles. Designed to meet the demands of high-performance builds and engine rebuilds, these pistons offer exceptional strength and durability. Whether you are upgrading your engine for increased power or replacing worn components, this piston set provides a reliable foundation for enhanced engine longevity and performance.\u003c\/p\u003e\u003cp\u003eBuilt to exacting specifications, these pistons feature a compact design with a 1.21\" compression height and a -1.5cc flat top, optimizing combustion efficiency and compression ratios. They are compatible with both full-floating and press-fit wrist pins, allowing for flexible installation options depending on your engine setup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEngineered for performance and durability, the DSS Racing FX Series Forged Pistons include the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for superior strength and resistance to high-stress conditions\u003c\/li\u003e\n\u003cli\u003eDesigned for 350 Small Block Mopar Hemi Gen III engines with a 3.578\" stroke\u003c\/li\u003e\n\u003cli\u003eCompression height of 1.21\" for optimal piston-to-cylinder head clearance\u003c\/li\u003e\n\u003cli\u003e1.5cc flat top piston design to enhance combustion efficiency\u003c\/li\u003e\n\u003cli\u003ePin diameter of .945\" 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\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios\u003c\/li\u003e\n\u003cli\u003eCompatible with 6.243\" connecting rods for precise fitment\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios ranging from 8.54 to 10.55 depending on chamber volume\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 construction and exceptional strength. The forging process enhances the metal’s grain structure, resulting in pistons that withstand the rigors of high RPM and elevated cylinder pressures without compromising durability.\u003c\/p\u003e\u003cp\u003eThe flat top design with a slight negative volume (-1.5cc) promotes efficient combustion, helping to maximize power output while maintaining safe compression levels. Precision machining ensures tight tolerances for optimal ring sealing and minimal friction, contributing to improved 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 vehicles equipped with the 5.7L Hemi Gen III engine. Installation requires standard engine rebuild procedures, including proper honing of cylinder walls and careful measurement of piston-to-wall clearance. The pistons accommodate either full-floating or press-fit wrist pins, providing flexibility based on your engine’s connecting rod design.\u003c\/p\u003e\u003cp\u003eProfessional installation is recommended to ensure correct piston orientation, ring gap positioning, and torque specifications 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 for 5.7L Gen III Hemi engines\u003c\/li\u003e\n\u003cli\u003eCompatible wrist pins (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 ideal for automotive enthusiasts, engine builders, and performance tuners seeking a durable, high-quality upgrade for their 5.7L Hemi engines. Whether you are restoring a classic Mopar, building a street performance engine, or preparing a vehicle for mild to moderate racing applications, these pistons provide the strength and precision needed to support increased power and reliability.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381033353428,"sku":"1-6720-3947","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381033386196,"sku":"2-6720-3947","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":47381033418964,"sku":"3-6720-3947","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":47381033451732,"sku":"K1-6720-3947","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":47381033484500,"sku":"K2-6720-3947","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":47381033517268,"sku":"K3-6720-3947","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0001993_4_b0e0b562-de86-4c88-ba8a-c3a1b7584237.webp?v=1771666970","url":"https:\/\/fasthemis.com\/products\/6720-3947-5-7-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-3-947-inch-bore-pin-dia-0-945-comp-height-1-21","provider":"FastHemis","version":"1.0","type":"link"}