{"product_id":"6728-3947-5-7-small-block-mopar-hemi-gen-iii-fx-series-9cc-dome-top-gen-iii-hemi-forged-piston-set-3-947-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing FX Series +9cc Dome Top Forged Piston Set: Fits Chrysler \/ Dodge \/ Jeep \/ Ram 5.7L Hemi","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler, Dodge, Jeep, Ram 5.7L Hemi Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6728-3947 \/ 2-6728-3947 \/ 3-6728-3947 \/ K1-6728-3947 \/ K2-6728-3947 \/ K3-6728-3947\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series +9cc Dome Top Forged Piston Set is engineered specifically for most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Hemi engine. Designed to enhance engine performance and durability, these pistons are ideal for enthusiasts and professional builders seeking reliable, high-quality components for their small block Mopar Hemi Gen III builds.\u003c\/p\u003e\u003cp\u003eFeaturing a +9cc dome top design, these pistons increase compression ratios, improving combustion efficiency and power output. Whether you are upgrading your engine for street performance, racing, or heavy-duty applications, the DSS Racing FX Series pistons deliver consistent strength and precision fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt with advanced engineering and precision manufacturing, these pistons offer several key benefits:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for superior strength and resistance to high-stress conditions\u003c\/li\u003e\n\u003cli\u003e+9cc dome top design to increase compression ratio and optimize combustion\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" for compatibility with stock and aftermarket components\u003c\/li\u003e\n\u003cli\u003ePin diameter of .945\" with options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm\/1.2mm\/3mm for reliable ring sealing and durability\u003c\/li\u003e\n\u003cli\u003eDesigned for a 3.578\" stroke and 6.243\" connecting rod length, matching factory specifications\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios from approximately 9.53:1 to 12.19:1\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\u003eEach piston in the DSS Racing FX Series is forged from high-grade aluminum alloy, providing an excellent balance of lightweight strength and thermal conductivity. The dome top design is carefully engineered to optimize combustion chamber shape and improve flame propagation, resulting in better power delivery and efficiency.\u003c\/p\u003e\u003cp\u003eThe pistons feature ring grooves machined to accommodate high-performance piston rings, ensuring effective sealing under extreme conditions. The wrist pin bore is designed for either full-floating or press-fit pins, allowing flexibility depending on engine build preferences. Overall, the construction emphasizes durability, precision, and compatibility with the 5.7L Hemi’s architecture.\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 5.7L Hemi engines, making it a direct replacement for stock pistons in these applications. Installation requires standard engine assembly procedures, and the pistons are compatible with factory connecting rods and crankshafts matching the specified stroke and rod length.\u003c\/p\u003e\u003cp\u003eBuilders should verify compression ratio targets based on combustion chamber volume and piston dome size to ensure optimal engine performance. No major modifications are typically necessary, but professional installation is recommended to maintain engine reliability and performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged +9cc dome top pistons (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eWrist pins compatible with full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for ring groove sizes and piston dimensions\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 racers upgrading or rebuilding Chrysler, Dodge, Jeep, and Ram 5.7L Hemi engines. It suits applications ranging from street performance upgrades to competitive motorsports where increased compression and durability are critical.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381030895828,"sku":"1-6728-3947","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381030928596,"sku":"2-6728-3947","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":47381030961364,"sku":"3-6728-3947","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":47381030994132,"sku":"K1-6728-3947","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":47381031026900,"sku":"K2-6728-3947","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":47381031059668,"sku":"K3-6728-3947","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002005_4_6a57c9d6-b3c9-4d22-9da5-df0ac125b7dc.webp?v=1771666976","url":"https:\/\/fasthemis.com\/products\/6728-3947-5-7-small-block-mopar-hemi-gen-iii-fx-series-9cc-dome-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"}