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