{"product_id":"6840-4125-6-1-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-927-comp-height-1-21","title":"DSS Racing FX Series Forged Flat Top Piston Set 4.125\" Bore: Chrysler \/ Dodge \/ Jeep (6.1L SRT8)","description":"\u003ch3\u003eDSS Racing FX Series Forged Flat Top Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.1L SRT8 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6840-4125D \/ 2-6840-4125D \/ 3-6840-4125D \/ K1-6840-4125D \/ K2-6840-4125D \/ K3-6840-4125D\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 Piston Set is engineered specifically for high-performance applications in Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 6.1L SRT8 engine. Designed to fit most models featuring a 4.125\" bore, these pistons are ideal for enthusiasts and professional builders seeking enhanced durability and precision in their engine builds.\u003c\/p\u003e\u003cp\u003eThese pistons are crafted to optimize combustion efficiency and withstand the rigors of increased power output, making them a reliable upgrade for street performance, track use, or custom engine projects. Their flat top design and precise specifications ensure improved compression and consistent performance across a variety of setups.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe FX Series pistons incorporate advanced engineering and materials to deliver superior performance and longevity. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for maximum strength and durability under high stress\u003c\/li\u003e\n\u003cli\u003eFlat top design with a -1.5cc volume to optimize compression ratios\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.125\" bore engines, specifically tailored for Chrysler\/Dodge\/Jeep\/Ram 6.1L SRT8 models\u003c\/li\u003e\n\u003cli\u003ePin diameter of .927\" 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 ring sealing and reduced blow-by\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21\" for precise piston-to-deck clearance\u003c\/li\u003e\n\u003cli\u003eDesigned for use with a 3.578\" stroke and 6.243\" rod length, matching factory and aftermarket builds\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to achieve compression ratios ranging from 9.2:1 to 11.36:1\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston in the FX Series is forged from high-grade aluminum alloy, providing an excellent balance of lightweight strength and thermal conductivity. The forging process enhances grain structure, resulting in pistons that resist cracking, scuffing, and deformation under extreme operating conditions.\u003c\/p\u003e\u003cp\u003eThe flat top design reduces quench distance and promotes efficient combustion, which can improve power output and throttle response. The pistons are engineered with precise ring grooves and pin bosses to ensure compatibility with factory and aftermarket components, allowing for flexible installation options.\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 6.1L SRT8 engines with a 4.125\" bore. Installation requires standard engine assembly procedures, and depending on the pin option selected (full-floating or press-fit), minor adjustments may be necessary. It is recommended to consult with a professional engine builder or mechanic to ensure proper fitment and clearances are maintained.\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 per SKU selection)\u003c\/li\u003e\n\u003cli\u003ePin options available: full-floating or press-fit\u003c\/li\u003e\n\u003cli\u003eRing groove machining for 1.2\/1.2\/3mm ring sets\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 upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram 6.1L SRT8 engines. Whether building a street performance engine, a track-ready powerplant, or a custom Mopar Hemi Gen III 383 small block, these pistons provide the strength and precision needed to handle increased horsepower and torque demands.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381012611284,"sku":"1-6840-4125D","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381012644052,"sku":"2-6840-4125D","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":47381012676820,"sku":"3-6840-4125D","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":47381012709588,"sku":"K1-6840-4125D","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":47381012742356,"sku":"K2-6840-4125D","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":47381012775124,"sku":"K3-6840-4125D","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002082_4_d5a8aebb-47bc-4ded-aba4-dce3862526ee.webp?v=1771667008","url":"https:\/\/fasthemis.com\/products\/6840-4125-6-1-small-block-mopar-hemi-gen-iii-fx-series-1-5cc-flat-top-gen-iii-hemi-forged-piston-set-4-125-inch-bore-pin-dia-0-927-comp-height-1-21","provider":"FastHemis","version":"1.0","type":"link"}