{"product_id":"6845-4055-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-055-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.055\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6845-4055C \/ 2-6845-4055C \/ 3-6845-4055C \/ K1-6845-4055C \/ K2-6845-4055C \/ K3-6845-4055C\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 the Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines. Designed to replace factory pistons with a high-performance upgrade, these forged pistons offer enhanced strength and durability for enthusiasts seeking reliable power gains and improved engine longevity. Ideal for street performance, mild racing, and high-output builds, this piston set ensures consistent performance under demanding conditions.\u003c\/p\u003e\u003cp\u003eEach piston is crafted to exacting specifications to fit the 4.055\" bore size of the 6.4L 392 Small Block Mopar HEMI Gen III engines. With a compression height of 1.21 inches and a -18cc dish top design, these pistons help optimize combustion chamber volume and compression ratios for balanced power and efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt for performance and reliability, the DSS Racing FX Series Forged Pistons include the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines\u003c\/li\u003e\n\u003cli\u003e4.055\" bore size tailored for Small Block Mopar HEMI Gen III applications\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and resistance to detonation\u003c\/li\u003e\n\u003cli\u003e18cc dish top design to optimize combustion chamber volume\u003c\/li\u003e\n\u003cli\u003eCompression height of 1.21 inches for precise piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter with options for full-floating or press-fit pins\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring\u003c\/li\u003e\n\u003cli\u003eDesigned for 3.720\" stroke and 6.2\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple dish volumes to accommodate different compression ratios (65cc, 74cc, 85cc)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FX Series pistons are forged from high-grade aluminum alloy, providing an optimal balance of lightweight design and exceptional strength. The forging process enhances grain structure, resulting in pistons that withstand high cylinder pressures and temperatures typical of performance engines. The -18cc dish top design reduces compression to prevent detonation while maintaining efficient combustion.\u003c\/p\u003e\u003cp\u003eEach piston features precision-machined ring grooves and a durable skirt coating to minimize friction and wear. The wrist pin bore is engineered to accept either full-floating or press-fit pins, allowing flexibility depending on engine build preferences. These pistons are engineered to exact OEM dimensions to ensure a seamless fit and reliable operation.\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 6.4L 392 HEMI engines with a 4.055\" bore. Installation requires standard engine rebuild procedures, including honing the cylinder walls and verifying clearances. The pistons accommodate a 3.720\" stroke crankshaft and 6.2\" connecting rods, matching factory specifications for smooth assembly.\u003c\/p\u003e\u003cp\u003eBuilders should select the appropriate dish volume piston to achieve the desired compression ratio based on their specific engine setup and fuel requirements. Proper ring installation and pin selection (full-floating or press-fit) are critical for optimal performance and durability.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged aluminum pistons (quantity as per SKU selection)\u003c\/li\u003e\n\u003cli\u003eWrist pins compatible with full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings (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 and professional engine builders upgrading or rebuilding 6.4L 392 HEMI engines. It suits applications ranging from high-performance street vehicles to mild racing builds where enhanced strength and reliability are essential. The FX Series pistons provide a solid foundation for increased power output while maintaining engine longevity under demanding conditions.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381012021460,"sku":"1-6845-4055C","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381012054228,"sku":"2-6845-4055C","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":47381012086996,"sku":"3-6845-4055C","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":47381012119764,"sku":"K1-6845-4055C","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":47381012152532,"sku":"K2-6845-4055C","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":47381012185300,"sku":"K3-6845-4055C","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002085_4_a387573f-f2a8-4c27-a05d-8b471104ab61.webp?v=1771667009","url":"https:\/\/fasthemis.com\/products\/6845-4055-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-18cc-dish-top-gen-iii-hemi-forged-piston-set-4-055-inch-bore-pin-dia-0-927-comp-height-1-21","provider":"FastHemis","version":"1.0","type":"link"}