{"product_id":"6810-4090-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-927-comp-height-1-12","title":"DSS Racing FX Series Forged Flat Top Pistons 4.090\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged Flat Top Pistons\u003c\/h3\u003e\u003cp\u003eFits Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 \/ 6.2L Hellcat \u0026amp; Trackhawk Gen III Hemi Engines\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6810-4090 \/ 2-6810-4090 \/ 3-6810-4090 \/ K1-6810-4090 \/ K2-6810-4090 \/ K3-6810-4090\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Flat Top Pistons are precision-engineered performance components designed specifically for most Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.2L Hellcat, 6.4L 392, and Trackhawk Gen III Hemi engines. These pistons are crafted to deliver exceptional strength and durability under high-stress conditions, making them ideal for enthusiasts seeking reliable power upgrades and engine longevity.\u003c\/p\u003e\u003cp\u003eBuilt to exacting specifications, these pistons feature a flat top design with a -1.5cc dish volume, optimizing combustion efficiency and compression ratios for improved performance. Whether you are building a high-performance street engine or a race-ready powerplant, the DSS Racing FX Series pistons provide the foundation for consistent, high-output operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEngineered for durability and performance, these pistons offer a range of advanced features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged from high-strength aluminum alloy for superior toughness and heat resistance\u003c\/li\u003e\n\u003cli\u003eFlat top piston design with -1.5cc dish volume to optimize combustion chamber dynamics\u003c\/li\u003e\n\u003cli\u003eComp height of 1.12\" for precise deck clearance and piston-to-head geometry\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm to accommodate high-performance piston rings\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.090\" bore applications and 4.050\" stroke crankshafts\u003c\/li\u003e\n\u003cli\u003eDesigned for use with 6.125\" connecting rods, matching factory and aftermarket setups\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression volumes (65cc, 74cc, 85cc) to tailor compression ratios from approximately 10.13:1 to 12.55:1\u003c\/li\u003e\n\u003cli\u003ePrecision CNC-machined for consistent fit and finish\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDSS Racing FX Series pistons are forged from premium aerospace-grade aluminum alloy, providing an optimal balance of lightweight strength and thermal conductivity. The forging process enhances the grain structure of the metal, resulting in pistons that resist cracking and deformation under extreme combustion pressures and temperatures.\u003c\/p\u003e\u003cp\u003eThe flat top design reduces quench distance and promotes efficient flame propagation, contributing to improved power output and fuel efficiency. The pistons are engineered with tight tolerances and feature robust ring lands and skirt profiles to minimize piston slap and wear during high-RPM operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed as direct replacements for most Chrysler, Dodge, Jeep, and Ram Gen III Hemi 6.2L and 6.4L engines, including Hellcat, 392, and Trackhawk models. Installation requires standard engine rebuild procedures, including proper honing of cylinder bores and precise ring end gap setting to ensure optimal sealing and longevity.\u003c\/p\u003e\u003cp\u003eDepending on the wrist pin configuration selected (full-floating or press-fit), minor adjustments to the connecting rods or pins may be necessary. It is recommended to consult with a professional engine builder to verify compatibility with your specific build and to achieve the best performance results.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of four DSS Racing FX Series Forged Flat Top Pistons (4.090\" bore size)\u003c\/li\u003e\n\u003cli\u003eWrist pins sized at .927\" with full-floating or press-fit options\u003c\/li\u003e\n\u003cli\u003ePrecision-machined piston rings compatible with 1.2\/1.2\/3mm groove dimensions (rings sold separately)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications sheet\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are ideal for performance enthusiasts and professional engine builders upgrading or rebuilding Chrysler, Dodge, Jeep, and Ram Gen III Hemi engines. They are well-suited for applications ranging from street performance and drag racing to off-road and track use, where enhanced strength, reliability, and compression tuning are critical.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381025292500,"sku":"1-6810-4090","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381025325268,"sku":"2-6810-4090","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":47381025358036,"sku":"3-6810-4090","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":47381025390804,"sku":"K1-6810-4090","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":47381025423572,"sku":"K2-6810-4090","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":47381025456340,"sku":"K3-6810-4090","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002027_4_9f9cccbf-3519-48cc-ad01-4ad144d3784b.webp?v=1771666985","url":"https:\/\/fasthemis.com\/products\/6810-4090-426-6-2-6-4-stroker-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-927-comp-height-1-12","provider":"FastHemis","version":"1.0","type":"link"}