{"product_id":"6833-4125-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-12cc-dish-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.125\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Gen III Hemi\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6833-4125 \/ 2-6833-4125 \/ 3-6833-4125 \/ K1-6833-4125 \/ K2-6833-4125 \/ K3-6833-4125\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 Gen III Hemi engines. Designed to replace factory pistons, this set offers enhanced strength and durability for high-performance and racing applications. Ideal for enthusiasts and professional builders seeking reliable, lightweight pistons that maintain optimal compression and withstand extreme conditions.\u003c\/p\u003e\u003cp\u003eThese pistons are precision forged to exacting standards, ensuring consistent quality and fitment. With a 4.125\" bore size and a compact dish design, they provide excellent combustion efficiency and support aggressive tuning setups.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt to deliver superior performance and longevity, the DSS Racing FX Series Forged Pistons include the following key features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 6.4L 392 Gen III Hemi engines from Chrysler, Dodge, Jeep, and Ram\u003c\/li\u003e\n\u003cli\u003e4.125\" bore diameter optimized for 398 Small Block Mopar Hemi Gen III applications\u003c\/li\u003e\n\u003cli\u003eCompact 12cc dish top design for improved combustion and compression control\u003c\/li\u003e\n\u003cli\u003eForged construction for enhanced strength and resistance to detonation\u003c\/li\u003e\n\u003cli\u003ePin diameter of .945\" with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2mm \/ 1.2mm \/ 3mm for reliable sealing and reduced friction\u003c\/li\u003e\n\u003cli\u003eDesigned for use with a 3.720\" stroke and 6.2\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression heights (65cc, 74cc, 85cc) to achieve approximate compression ratios of 10.51, 9.61, and 8.71 respectively\u003c\/li\u003e\n\u003cli\u003ePrecision machined for consistent fit and performance in high-stress environments\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 crafted from high-grade forged aluminum alloy, providing an optimal balance of strength and lightweight characteristics. This construction improves engine responsiveness and reduces reciprocating mass, which is critical for high RPM durability. The pistons feature a carefully engineered dish top with a -12cc volume to optimize combustion chamber shape and compression ratio, enhancing power output and efficiency.\u003c\/p\u003e\u003cp\u003eEach piston is designed with precise ring grooves to accommodate high-performance piston rings, ensuring excellent sealing and minimizing blow-by. The wrist pin bore supports either full-floating or press-fit pins, allowing builders to tailor the setup to their specific engine requirements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are direct fit replacements for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 Gen III Hemi engines. Installation requires standard engine assembly procedures, with attention to proper ring end gap and wrist pin fitment based on the selected configuration. No major modifications are necessary when upgrading from factory pistons, making them suitable for both rebuilds and performance 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 FX Series forged pistons with 4.125\" bore\u003c\/li\u003e\n\u003cli\u003eWrist pin options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for compression height and dish volume\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 who demand reliable, high-strength components for the Mopar 6.4L 392 Gen III Hemi platform. Whether upgrading for increased power, durability, or engine rebuilds, these pistons provide a solid foundation for enhanced engine performance and longevity.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018018004,"sku":"1-6833-4125","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018050772,"sku":"2-6833-4125","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":47381018083540,"sku":"3-6833-4125","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":47381018116308,"sku":"K1-6833-4125","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":47381018149076,"sku":"K2-6833-4125","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":47381018181844,"sku":"K3-6833-4125","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002058_4_1f481fa0-764e-44c6-bf98-314b1e3ae93a.webp?v=1771666998","url":"https:\/\/fasthemis.com\/products\/6833-4125-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-12cc-dish-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-945-comp-height-1-21","provider":"FastHemis","version":"1.0","type":"link"}