{"product_id":"6728-3917-5-7-small-block-mopar-hemi-gen-iii-fx-series-9cc-dome-top-gen-iii-hemi-forged-piston-set-3-917-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing Forged +9cc Dome Top Piston Set 3.917\" Bore 5.7L Small Block Mopar Gen III Hemi: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing Forged +9cc Dome Top Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 5.7L Hemi Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6728-3917 \/ 2-6728-3917 \/ 3-6728-3917 \/ K1-6728-3917 \/ K2-6728-3917 \/ K3-6728-3917\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing Forged +9cc Dome Top Piston Set is engineered specifically for the 5.7L Small Block Mopar Gen III Hemi engines found in many Chrysler, Dodge, Jeep, and Ram vehicles. Designed to enhance combustion efficiency and increase compression ratios, these pistons are ideal for enthusiasts looking to boost engine performance and reliability. Whether you are building a high-performance street machine or a race-ready engine, this piston set delivers precision and durability to meet demanding conditions.\u003c\/p\u003e\u003cp\u003eFeaturing a +9cc dome top design, these pistons increase the compression ratio, improving power output and throttle response. The set is compatible with both full-floating and press-fit wrist pins, offering flexibility for various engine builds. With a bore size of 3.917\" and a stroke of 3.578\", these pistons are tailored to fit the 5.7L Hemi’s specifications perfectly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing pistons incorporate advanced design and manufacturing techniques to ensure optimal performance and longevity. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for superior strength and resistance to high stress\u003c\/li\u003e\n\u003cli\u003e+9cc dome top to increase compression ratio and combustion efficiency\u003c\/li\u003e\n\u003cli\u003eCompatible with full-floating or press-fit wrist pins (PIN: .945\")\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring\u003c\/li\u003e\n\u003cli\u003eDesigned for 3.917\" bore diameter and 3.578\" stroke engines\u003c\/li\u003e\n\u003cli\u003eCompact dome height of 1.21\" for optimal piston-to-valve clearance\u003c\/li\u003e\n\u003cli\u003eFits 6.243\" connecting rods commonly used in 5.7L Hemi builds\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression volume options: 65cc, 74cc, and 85cc\u003c\/li\u003e\n\u003cli\u003ePrecision 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\u003eManufactured from high-grade forged aluminum alloy, these pistons provide an excellent balance of lightweight design and exceptional strength. The forging process enhances the metal’s grain structure, resulting in pistons that withstand the rigors of high-performance and forced induction applications. The +9cc dome top is carefully engineered to optimize combustion chamber shape and improve flame propagation.\u003c\/p\u003e\u003cp\u003eThe pistons feature precise ring grooves to accommodate standard 1.2mm compression rings and a 3mm oil ring, ensuring effective sealing and oil control. The wrist pin bore is designed for either full-floating or press-fit installation, allowing builders to tailor the setup to their engine’s needs. Overall, the design prioritizes durability, thermal efficiency, and compatibility with factory and aftermarket components.\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 Small Block Mopar Gen III Hemi engine. Installation requires standard engine rebuild procedures, including proper honing of the cylinder bores to the specified 3.917\" diameter. The pistons are compatible with a 3.578\" stroke crankshaft and 6.243\" connecting rods, matching factory dimensions for a straightforward swap.\u003c\/p\u003e\u003cp\u003eBuilders should verify compression ratio requirements based on their combustion chamber volume and intended fuel type. The +9cc dome top increases compression, so tuning adjustments may be necessary to optimize performance and prevent detonation. Professional installation is recommended to ensure correct ring end gap, wrist pin fitment, and piston orientation.\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 required for engine)\u003c\/li\u003e\n\u003cli\u003eWrist pin bore compatible with full-floating or press-fit pins\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves for 1.2\/1.2\/3mm ring sets\u003c\/li\u003e\n\u003cli\u003eTechnical specifications and installation guidelines\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 5.7L Hemi engines. It suits applications ranging from street performance to drag racing and other motorsports where increased compression and durability are essential. The pistons offer a reliable upgrade path for those seeking to extract more power while maintaining engine longevity.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381031485652,"sku":"1-6728-3917","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381031518420,"sku":"2-6728-3917","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":47381031551188,"sku":"3-6728-3917","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":47381031583956,"sku":"K1-6728-3917","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":47381031616724,"sku":"K2-6728-3917","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":47381031649492,"sku":"K3-6728-3917","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002002_4_f4e5fc5b-5a45-4514-b99c-b31ae2ee1637.webp?v=1771666975","url":"https:\/\/fasthemis.com\/products\/6728-3917-5-7-small-block-mopar-hemi-gen-iii-fx-series-9cc-dome-top-gen-iii-hemi-forged-piston-set-3-917-inch-bore-pin-dia-0-945-comp-height-1-21","provider":"FastHemis","version":"1.0","type":"link"}