{"product_id":"6860-4125-6-2-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-1-275","title":"DSS Racing FX Series Gen III Hemi Forged Piston Set 4.125\" Bore: Fits most Hemi Models","description":"\u003ch3\u003eDSS Racing FX Series Gen III Hemi Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Chrysler, Dodge, Jeep, Ram 6.2L Hellcat \u0026amp; Trackhawk Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6860-4125 \/ 2-6860-4125 \/ 3-6860-4125 \/ K1-6860-4125 \/ K2-6860-4125 \/ K3-6860-4125\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Gen III Hemi Forged Piston Set is engineered specifically for high-performance applications in most Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and Trackhawk engines. Designed to handle the extreme demands of forced induction and high horsepower builds, these pistons offer superior strength and durability compared to stock cast pistons. Whether you are building a street performance engine or a track-ready powerhouse, this piston set delivers reliable performance and enhanced engine longevity.\u003c\/p\u003e\u003cp\u003eThese pistons are ideal for enthusiasts and professional builders seeking to upgrade their Gen III Hemi engines with components that maintain factory bore size while improving compression and combustion efficiency.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eBuilt to exacting standards, the DSS Racing FX Series pistons incorporate advanced design elements to optimize performance and reliability:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 4.125\" bore size, fitting most Chrysler\/Dodge\/Jeep\/Ram 6.2L Hellcat and Trackhawk engines\u003c\/li\u003e\n\u003cli\u003eForged construction for superior strength and resistance to detonation\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\" to maintain proper deck clearance and compression ratio\u003c\/li\u003e\n\u003cli\u003e.927\" wrist pin diameter available in full-floating or press-fit options\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second ring grooves, 3mm oil ring groove for effective sealing\u003c\/li\u003e\n\u003cli\u003eCompatible with 3.578\" stroke and 6.2\" connecting rods typical of Gen III Hemi engines\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression ratio configurations (approximate): 65cc for 11.36:1, 74cc for 10.26:1, and 85cc for 9.2:1\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 precision forged from high-grade aluminum alloy, ensuring exceptional strength-to-weight ratio and thermal conductivity. The flat top design with a slight dish enhances combustion efficiency and helps control detonation under high boost or high compression conditions. The pistons are engineered to exact tolerances to fit the 4.125\" bore of Gen III Hemi blocks, maintaining optimal piston-to-wall clearance and ring seal.\u003c\/p\u003e\u003cp\u003eThe wrist pins are available in both full-floating and press-fit styles, allowing builders to select the best option for their application and durability requirements. The ring grooves are machined to tight specifications to accommodate high-performance piston rings, ensuring excellent sealing and oil control under demanding conditions.\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 upgrade for most Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and Trackhawk engines with a 4.125\" bore. Installation requires standard engine assembly procedures and proper ring end gap setting. No major modifications to the block or rods are typically necessary, making these pistons a straightforward upgrade for performance builds.\u003c\/p\u003e\u003cp\u003eBuilders should verify compatibility with their specific engine configuration and ensure proper clearances during assembly to maximize reliability and performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons for all cylinders (quantity as per engine requirements)\u003c\/li\u003e\n\u003cli\u003eWrist pins (.927\" diameter) with options for full-floating or press-fit installation\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for compression height, ring groove dimensions, and piston dish volume\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Gen III Hemi Forged Piston Set is perfect for performance enthusiasts, engine builders, and racers upgrading their 6.2L Hellcat or Trackhawk engines. It suits applications ranging from high-boost street builds to track-focused race engines where durability, strength, and precise fitment are critical. These pistons provide a solid foundation for increasing horsepower and torque while maintaining engine reliability under extreme conditions.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47380999700692,"sku":"1-6860-4125","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47380999733460,"sku":"2-6860-4125","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":47380999766228,"sku":"3-6860-4125","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":47380999798996,"sku":"K1-6860-4125","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":47380999831764,"sku":"K2-6860-4125","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":47380999864532,"sku":"K3-6860-4125","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002135_4_bdc6f7b5-d9de-42b2-a775-62e02ccd1012.webp?v=1771667030","url":"https:\/\/fasthemis.com\/products\/6860-4125-6-2-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-1-275","provider":"FastHemis","version":"1.0","type":"link"}