{"product_id":"6713-3937-5-7-small-block-mopar-hemi-gen-iii-fx-series-12cc-dish-top-gen-iii-hemi-forged-piston-set-3-937-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 3.937\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram 5.7L Hemi","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\u003e1-6713-3937 \/ 2-6713-3937 \/ 3-6713-3937 \/ K1-6713-3937 \/ K2-6713-3937 \/ K3-6713-3937\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 Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Hemi engine. Designed to meet the demands of high-performance applications, these pistons offer enhanced strength, durability, and reliability over stock components. Whether you are building a street performance engine or a race-ready powerplant, this piston set delivers the precision and quality needed to maximize your engine’s potential.\u003c\/p\u003e\u003cp\u003eThese pistons are ideal for enthusiasts and professional builders seeking to upgrade their 348 Small Block Mopar Hemi Gen III engines with components that provide improved combustion efficiency and withstand increased cylinder pressures. The FX Series pistons feature a forged construction and a carefully engineered dish top design to optimize compression ratios and combustion chamber dynamics.\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 high-quality materials to ensure superior performance and longevity. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines\u003c\/li\u003e\n\u003cli\u003e3.937\" bore size tailored for 348 Small Block Mopar Hemi Gen III applications\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" for precise piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003e12cc dish top design to optimize combustion chamber volume and compression ratio\u003c\/li\u003e\n\u003cli\u003e.927\" piston 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 for effective sealing and oil control\u003c\/li\u003e\n\u003cli\u003eStroke compatibility of 3.578\" and connecting rod length of 6.243\" for balanced engine geometry\u003c\/li\u003e\n\u003cli\u003eAvailable compression ratios approximately 9.38:1 (65cc), 8.59:1 (74cc), and 7.79:1 (85cc) to suit various build requirements\u003c\/li\u003e\n\u003cli\u003ePrecision forged construction 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\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 refines the grain structure of the metal, resulting in pistons that resist cracking, scuffing, and thermal fatigue under extreme operating conditions.\u003c\/p\u003e\u003cp\u003eThe pistons feature a carefully engineered dish top with a -12cc volume to optimize combustion chamber shape and promote efficient flame propagation. The ring grooves are machined to tight tolerances to ensure proper ring seating and minimize blow-by. Additionally, the pistons accommodate either full-floating or press-fit wrist pins, allowing 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 to fit most Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines, making them a direct replacement for stock pistons in compatible builds. Installation requires standard engine assembly procedures, including proper ring end gap setting and piston orientation. Depending on the wrist pin option selected, either full-floating or press-fit installation techniques should be followed.\u003c\/p\u003e\u003cp\u003eBuilders should verify bore size and clearances to ensure optimal fitment. No major modifications to the block are typically necessary, but professional installation is recommended to achieve the best 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 with 3.937\" bore diameter\u003c\/li\u003e\n\u003cli\u003eWrist pins (.927\") compatible with full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings sized 1.2mm\/1.2mm\/3mm\u003c\/li\u003e\n\u003cli\u003eInstallation guidelines and 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 engine builders and performance enthusiasts upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram 5.7L Hemi engines. It suits applications ranging from street performance and mild racing to more aggressive builds requiring durable forged components. The variety of compression ratio options allows customization 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":47381036859604,"sku":"1-6713-3937","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381036892372,"sku":"2-6713-3937","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":47381036925140,"sku":"3-6713-3937","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":47381036957908,"sku":"K1-6713-3937","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":47381036990676,"sku":"K2-6713-3937","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":47381037023444,"sku":"K3-6713-3937","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0001976_4_dd18e3fd-794c-4c48-8c7b-b887108cebff.webp?v=1771667129","url":"https:\/\/fasthemis.com\/products\/6713-3937-5-7-small-block-mopar-hemi-gen-iii-fx-series-12cc-dish-top-gen-iii-hemi-forged-piston-set-3-937-inch-bore-pin-dia-0-927-comp-height-1-21","provider":"FastHemis","version":"1.0","type":"link"}