{"product_id":"6820-4055-6-1-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-055-inch-bore-pin-dia-0-984-comp-height-1-21","title":"DSS Racing Gen III Hemi FX Series Forged Piston Set 4.055\" Bore: Chrysler \/ Dodge \/ Jeep (6.1L SRT8)","description":"\u003ch3\u003eDSS Racing Gen III Hemi FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler \/ Dodge \/ Jeep \/ Ram 6.1L SRT8 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6820-4055 \/ 2-6820-4055 \/ 3-6820-4055 \/ K1-6820-4055 \/ K2-6820-4055 \/ K3-6820-4055\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 Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 engines. Designed to fit a 4.055\" bore, these pistons are an ideal upgrade for enthusiasts seeking enhanced durability and performance in their 370 Small Block Mopar Hemi Gen III powerplants. Whether you are rebuilding your engine or upgrading for higher horsepower applications, these forged pistons offer superior strength and reliability compared to stock cast components.\u003c\/p\u003e\u003cp\u003eBuilt to exacting standards, the FX Series pistons feature a compact 1.21\" compression height and a -1.5cc flat top design, optimizing combustion efficiency and allowing for precise control over compression ratios. This piston set is perfect for high-performance street, track, or racing applications where durability and consistent performance are critical.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons incorporate advanced engineering and materials to deliver outstanding performance and longevity. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 4.055\" bore size for most Chrysler \/ Dodge \/ Jeep \/ Ram 6.1L SRT8 engines\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and resistance to detonation\u003c\/li\u003e\n\u003cli\u003eCompact 1.21\" compression height for optimized piston-to-cylinder geometry\u003c\/li\u003e\n\u003cli\u003e1.5cc flat top piston design to fine-tune compression ratios\u003c\/li\u003e\n\u003cli\u003e.984\" pin diameter with options for full-floating or press-fit pins\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm for reliable ring sealing\u003c\/li\u003e\n\u003cli\u003eDesigned for use with 3.578\" stroke crankshafts and 6.243\" connecting rods\u003c\/li\u003e\n\u003cli\u003eApproximate compression ratios available: 65cc chamber - 11.05:1, 74cc chamber - 9.98:1, 85cc chamber - 8.93:1\u003c\/li\u003e\n\u003cli\u003ePrecision machining ensures consistent fit and performance\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 balance of strength, weight, and thermal conductivity. Forging enhances the grain structure of the metal, resulting in pistons that withstand high cylinder pressures and temperatures without cracking or deforming. The flat top design with a slight dish (-1.5cc) allows for precise control over combustion chamber volume and compression ratio, which is critical for tuning performance and avoiding detonation.\u003c\/p\u003e\u003cp\u003eEach piston features carefully engineered ring grooves to accommodate high-performance piston rings, ensuring optimal sealing and oil control. The pin bore is designed to accept either full-floating or press-fit wrist pins, giving builders flexibility depending on their engine setup and intended use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct fit for most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 engines with a 4.055\" bore. Installation requires standard engine rebuild procedures, including proper honing and cleaning of the cylinder bores. The pistons are compatible with the factory stroke of 3.578\" and connecting rod length of 6.243\". Builders should verify clearances and ring end gaps during assembly to ensure optimal performance and longevity.\u003c\/p\u003e\u003cp\u003eThese pistons are suitable for both full-floating and press-fit wrist pin configurations, allowing for customization based on engine build preferences. No major modifications are typically required when upgrading from stock pistons, making this set an excellent choice for performance rebuilds and upgrades.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of four DSS Racing Gen III Hemi FX Series forged pistons (4.055\" bore)\u003c\/li\u003e\n\u003cli\u003eWrist pin compatibility for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves for 1.2mm top and second rings, 3mm oil ring\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 who demand enhanced strength and reliability from their 6.1L SRT8 Hemi engines. Whether upgrading for increased horsepower, rebuilding a worn engine, or preparing a vehicle for track use, these forged pistons provide the durability and performance needed to handle aggressive driving and high cylinder pressures.\u003c\/p\u003e\u003cp\u003eThey are especially suited for applications requiring improved detonation resistance and precise compression ratio control, making them a smart choice for street performance, drag racing, and road course competition.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381021982932,"sku":"1-6820-4055","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381022015700,"sku":"2-6820-4055","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":47381022048468,"sku":"3-6820-4055","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":47381022081236,"sku":"K1-6820-4055","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":47381022114004,"sku":"K2-6820-4055","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":47381022146772,"sku":"K3-6820-4055","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002042_4_10aeeb57-5d30-4a6b-a028-7b2150796c89.webp?v=1771666992","url":"https:\/\/fasthemis.com\/products\/6820-4055-6-1-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-055-inch-bore-pin-dia-0-984-comp-height-1-21","provider":"FastHemis","version":"1.0","type":"link"}