{"product_id":"6840-4125-6-1-stroker-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: Fits Chrysler \/ Dodge \/ Jeep 6.1L Gen III Hemi","description":"\u003ch3\u003eDSS Racing FX Series Forged Flat Top Piston Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 6.1L SRT8\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6840-4125 \/ 2-6840-4125 \/ 3-6840-4125 \/ K1-6840-4125 \/ K2-6840-4125 \/ K3-6840-4125\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 the Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 models featuring the Gen III Hemi engine platform. Designed to replace factory pistons, this set offers superior strength and durability for high-performance applications. Ideal for enthusiasts and professional builders seeking enhanced engine reliability and efficiency, these pistons provide a solid foundation for increased power and longevity under demanding conditions.\u003c\/p\u003e\u003cp\u003eCrafted to exacting specifications, the FX Series pistons maintain optimal compression ratios while accommodating various combustion chamber volumes, ensuring compatibility with a range of build configurations. Whether upgrading a street machine or building a race-ready engine, these pistons deliver consistent performance and improved thermal management.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt to meet the rigorous demands of high-performance Mopar engines, the DSS Racing FX Series pistons incorporate advanced design elements and materials:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for exceptional strength and durability\u003c\/li\u003e\n\u003cli\u003eFlat top design with a -1.5cc dish for optimized combustion efficiency\u003c\/li\u003e\n\u003cli\u003eComp height of 1.21 inches for precise deck clearance and piston-to-head clearance\u003c\/li\u003e\n\u003cli\u003e.927-inch wrist pin diameter with options for full-floating or press-fit installation\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 3.578-inch stroke crankshafts and 6.243-inch connecting rods\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios from 9.2:1 up to 11.36:1\u003c\/li\u003e\n\u003cli\u003ePrecision machining ensures tight tolerances and reliable fitment\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 forged from premium-grade aluminum alloy, providing an optimal balance of lightweight strength and heat dissipation. The flat top profile promotes efficient combustion and reduces the risk of detonation, while the carefully engineered dish volume allows builders to fine-tune compression ratios to match specific engine setups. The wrist pins are designed for either full-floating or press-fit installation, offering flexibility depending on engine build preferences. Ring grooves are precisely cut to accommodate high-performance rings, ensuring excellent sealing and reduced blow-by.\u003c\/p\u003e\u003cp\u003eEach piston undergoes rigorous quality control and finishing processes to guarantee durability and performance under extreme operating conditions typical of SRT8 and other high-output Mopar engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed as a direct fit replacement for most Chrysler, Dodge, Jeep, and Ram 6.1L SRT8 Gen III Hemi engines. Installation requires standard engine rebuild procedures, including proper honing of cylinder walls and careful measurement of piston-to-cylinder clearance. Depending on the wrist pin option selected, either full-floating or press-fit installation methods can be employed. No major modifications are necessary, making these pistons an excellent upgrade for both rebuilds and performance enhancements.\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 for engine)\u003c\/li\u003e\n\u003cli\u003eWrist pins (.927\" diameter) compatible with full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for compression ratios and piston dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Flat Top Pistons are ideal for performance enthusiasts, engine builders, and racers who demand reliable, high-strength components for their 6.1L Gen III Hemi engines. Whether upgrading a street SRT8 for improved durability or building a competition engine requiring precise compression tuning, these pistons offer a versatile and robust solution.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381014675668,"sku":"1-6840-4125","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381014708436,"sku":"2-6840-4125","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":47381014741204,"sku":"3-6840-4125","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":47381014773972,"sku":"K1-6840-4125","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":47381014806740,"sku":"K2-6840-4125","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":47381014839508,"sku":"K3-6840-4125","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002078_4_14c4fe4d-2525-4c62-aa33-3701473d4aee.webp?v=1771667007","url":"https:\/\/fasthemis.com\/products\/6840-4125-6-1-stroker-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"}