{"product_id":"6857-4125-6-2-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-945-comp-height-1-275","title":"DSS Racing FX Series +4cc Dome Top Forged Piston Set 4.125\" Bore: Fits most Hellcat Models","description":"\u003ch3\u003eDSS Racing FX Series +4cc Dome Top Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat \u0026amp; Trackhawk\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6857-4125 \/ 2-6857-4125 \/ 3-6857-4125 \/ K1-6857-4125 \/ K2-6857-4125 \/ K3-6857-4125\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series +4cc Dome Top Forged Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and Trackhawk engines. Designed to fit a 4.125\" bore, these pistons are ideal for enthusiasts and professional builders seeking to enhance engine durability and power output. Featuring a +4cc dome top design, they provide increased compression ratios for improved combustion efficiency and performance gains.\u003c\/p\u003e\u003cp\u003eThese pistons are compatible with the 383 Small Block Mopar Hemi Gen III platform and are built to withstand the rigors of both street and track use. Whether upgrading a factory engine or building a custom powerplant, the DSS Racing FX Series pistons deliver reliable strength and precision fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDesigned with advanced engineering and quality materials, these pistons offer several key benefits:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e+4cc dome top design for increased compression and power potential\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.125\" bore size, ideal for 6.2L Hellcat and Trackhawk engines\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003eComp height of 1.275\" optimized for performance builds\u003c\/li\u003e\n\u003cli\u003ePin diameter of .945\" with options for full-floating or press-fit installation\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 a 3.578\" stroke and 6.2\" connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable with various dome volumes to tailor compression ratio: 65cc (12.24:1), 74cc (10.95:1), and 85cc (9.74:1)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the DSS Racing FX Series is precision forged from high-grade aluminum alloy, ensuring exceptional strength-to-weight ratio and resistance to thermal expansion. The dome top design enhances combustion chamber efficiency by increasing compression without compromising piston integrity. The pistons feature carefully machined ring grooves and pin bores to maintain optimal sealing and reduce friction.\u003c\/p\u003e\u003cp\u003eThe option for full-floating or press-fit wrist pins allows builders to customize installation based on application requirements. The pistons are engineered to maintain tight tolerances for consistent performance and longevity in demanding environments.\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 6.2L Hellcat and Trackhawk engines with a 4.125\" bore. Installation requires standard engine assembly procedures, with attention to proper ring end gap and wrist pin fitment based on the chosen configuration. No major modifications are typically necessary, making them suitable for both professional engine builders and experienced enthusiasts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged +4cc dome top pistons (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eWrist pins (full-floating or press-fit options depending on SKU)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions and technical specifications\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 and engine builders upgrading or rebuilding 6.2L Hellcat and Trackhawk engines who want to increase compression and power output while maintaining reliability. It suits applications ranging from street performance to track and racing environments where durability and precision are critical.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47380999897300,"sku":"1-6857-4125","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47380999930068,"sku":"2-6857-4125","price":769.95,"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":47380999962836,"sku":"3-6857-4125","price":959.95,"currency_code":"USD","in_stock":true},{"title":"FX-1 4032 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47380999995604,"sku":"K1-6857-4125","price":937.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins - Locs With DSS Racing Rings in a Kit","offer_id":47381000028372,"sku":"K2-6857-4125","price":967.95,"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":47381000061140,"sku":"K3-6857-4125","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002136_4_e450be54-4df0-4196-a34d-492280949a95.webp?v=1771667031","url":"https:\/\/fasthemis.com\/products\/6857-4125-6-2-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-945-comp-height-1-275","provider":"FastHemis","version":"1.0","type":"link"}