{"product_id":"6860-4090-6-2-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-1-275","title":"DSS Racing FX Series Forged Flat Top Pistons Set 4.090\" Bore: Fits Jeep \/ Dodge \/ Ram (11-24)","description":"\u003ch3\u003eDSS Racing FX Series Forged Flat Top Pistons\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat \u0026amp; Trackhawk Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6860-4090 \/ 2-6860-4090 \/ 3-6860-4090 \/ K1-6860-4090 \/ K2-6860-4090 \/ K3-6860-4090\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 the Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and Trackhawk engines. Crafted to handle the extreme demands of high-performance and forced induction applications, these pistons offer enhanced strength, durability, and reliability over stock components. Ideal for enthusiasts and professional builders looking to maximize power output while maintaining engine longevity, these pistons provide a solid foundation for serious engine builds.\u003c\/p\u003e\u003cp\u003eWith a bore size of 4.090\" and a compact flat top design, these pistons optimize combustion efficiency and compression ratios, contributing to improved throttle response and power delivery. Whether upgrading a street machine or building a track-ready powerhouse, the DSS Racing FX Series pistons deliver consistent performance under high stress conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEngineered for high-performance Mopar Hemi applications, these pistons incorporate advanced design elements to meet the rigorous demands of modern muscle cars and trucks:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged 2618 aluminum alloy construction for superior strength and heat resistance\u003c\/li\u003e\n\u003cli\u003eFlat top design with a -1.5cc dish for optimized combustion chamber volume\u003c\/li\u003e\n\u003cli\u003eComp height of 1.275\" tailored for Gen III 376 Small Block Mopar Hemi engines\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" compatible with 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\u003eStroke compatibility of 3.578\" and rod length of 6.2\" for precise engine geometry\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression ratios approximately 11.2:1 (65cc), 10.11:1 (74cc), and 9.06:1 (85cc) to suit various tuning requirements\u003c\/li\u003e\n\u003cli\u003eDesigned to fit most Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat and Trackhawk models\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston is forged from premium 2618 aluminum alloy, known for its excellent strength-to-weight ratio and resistance to thermal fatigue. The forging process enhances grain structure, resulting in pistons that withstand the high cylinder pressures and temperatures typical of boosted and high-horsepower engines. The flat top design with a slight dish volume ensures optimal combustion efficiency and helps control detonation under aggressive tuning.\u003c\/p\u003e\u003cp\u003eThe pistons feature precision-machined ring grooves and pin bores to ensure proper ring seal and wrist pin fitment, whether using full-floating or press-fit pins. This attention to detail reduces friction and wear, contributing to longer engine life and consistent performance. The combination of compact compression heights and tailored bore size allows for easy integration into existing engine builds without extensive modifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing FX Series pistons are designed as direct replacements for most Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and Trackhawk engines. Installation requires standard engine assembly procedures, including proper ring end gap setting and wrist pin installation. Depending on the specific engine build and compression ratio selected, minor adjustments to head gasket thickness or deck height may be necessary to achieve desired compression targets.\u003c\/p\u003e\u003cp\u003eProfessional installation is recommended to ensure optimal piston ring sealing and to maintain engine reliability. These pistons are compatible with existing connecting rods and crankshafts specified in the fitment, making them a straightforward upgrade for performance builds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged flat top pistons (quantity as required per engine)\u003c\/li\u003e\n\u003cli\u003ePrecision-machined wrist pin bores\u003c\/li\u003e\n\u003cli\u003eRing grooves sized for high-performance piston rings\u003c\/li\u003e\n\u003cli\u003eInstallation guidelines and specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese DSS Racing FX Series pistons are ideal for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePerformance enthusiasts upgrading Hellcat and Trackhawk engines\u003c\/li\u003e\n\u003cli\u003eEngine builders seeking durable forged pistons for forced induction setups\u003c\/li\u003e\n\u003cli\u003eStreet and track applications requiring reliable high-compression components\u003c\/li\u003e\n\u003cli\u003eRebuilds and upgrades aiming to increase power output without sacrificing engine longevity\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381000421588,"sku":"1-6860-4090","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381000454356,"sku":"2-6860-4090","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":47381000487124,"sku":"3-6860-4090","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":47381000519892,"sku":"K1-6860-4090","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":47381000552660,"sku":"K2-6860-4090","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":47381000585428,"sku":"K3-6860-4090","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002134_4_8b06203c-a4fc-498b-a66b-10f75ac004ca.webp?v=1771667030","url":"https:\/\/fasthemis.com\/products\/6860-4090-6-2-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-1-275","provider":"FastHemis","version":"1.0","type":"link"}