{"product_id":"6833-4090-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-12cc-dish-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-945-comp-height-1-21","title":"DSS Racing FX Series Forged Piston Set 4.090\" Bore: Fits Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392","description":"\u003ch3\u003eDSS Racing FX Series Forged Piston Set\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.4L 392 Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6833-4090 \/ 2-6833-4090 \/ 3-6833-4090 \/ K1-6833-4090 \/ K2-6833-4090 \/ K3-6833-4090\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged Piston Set is engineered specifically for the Chrysler, Dodge, Jeep, and Ram 6.4L 392 HEMI engines, delivering exceptional strength and durability for high-performance applications. Designed to fit most 6.4L 392 models, these pistons offer a precise 4.090\" bore size and are ideal for enthusiasts and professional builders seeking reliable, race-ready components.\u003c\/p\u003e\u003cp\u003eBuilt to withstand the rigors of aggressive street driving, track use, and motorsports, this piston set enhances engine efficiency and longevity. The FX Series pistons provide a perfect balance of lightweight construction and robust design, helping to improve throttle response and overall engine performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese forged pistons incorporate advanced design elements and manufacturing techniques to meet the demands of high-output Mopar HEMI engines:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 391 Small Block Mopar HEMI Gen III engines\u003c\/li\u003e\n\u003cli\u003eComp Height: 1.21\" for optimal piston-to-head clearance\u003c\/li\u003e\n\u003cli\u003e12cc dish top design to control compression and combustion characteristics\u003c\/li\u003e\n\u003cli\u003ePin diameter: .945\" with options for full-floating or press-fit configurations\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions: 1.2mm top and second rings, 3mm oil ring for superior sealing\u003c\/li\u003e\n\u003cli\u003eStroke compatibility: 3.720\" stroke engines\u003c\/li\u003e\n\u003cli\u003eConnecting rod length: 6.2\" for balanced piston travel and engine geometry\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple combustion chamber volumes (65cc, 74cc, 85cc) to tailor compression ratios from 8.59:1 to 10.36:1\u003c\/li\u003e\n\u003cli\u003ePrecision forged for enhanced strength and fatigue resistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDSS Racing FX Series pistons are crafted from high-grade forged aluminum alloy, ensuring superior strength-to-weight ratio and excellent thermal conductivity. The forging process refines the grain structure of the metal, resulting in pistons that resist cracking and deformation under extreme heat and pressure.\u003c\/p\u003e\u003cp\u003eThe pistons feature a carefully engineered dish top design with a -12cc volume to optimize combustion chamber shape and reduce detonation risk. The pin bosses are reinforced to accommodate either full-floating or press-fit wrist pins, providing flexibility for various engine builds and performance goals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis piston set is designed for direct fitment in most Chrysler, Dodge, Jeep, and Ram 6.4L 392 engines, making it a straightforward upgrade for engine rebuilds or performance enhancements. Installation requires standard machining checks and clearances to ensure proper ring seal and piston-to-cylinder wall fitment.\u003c\/p\u003e\u003cp\u003eBuilders should verify compatibility with their specific engine configuration, including stroke and rod length, to achieve optimal performance and reliability. Professional installation is recommended to maintain engine integrity and warranty compliance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of forged pistons with 4.090\" bore size\u003c\/li\u003e\n\u003cli\u003eWrist pin options: full-floating or press-fit (depending on selection)\u003c\/li\u003e\n\u003cli\u003ePrecision-machined ring grooves for 1.2mm top and second rings, 3mm oil ring\u003c\/li\u003e\n\u003cli\u003eDetailed specifications and installation guidelines\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 Mopar enthusiasts, engine builders, and racers looking to upgrade their 6.4L 392 HEMI engines with durable, high-performance components. Whether building a street\/strip machine, a track-focused vehicle, or a high-output daily driver, the DSS Racing FX Series pistons provide the strength and precision needed to maximize engine potential.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018607828,"sku":"1-6833-4090","price":689.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381018640596,"sku":"2-6833-4090","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":47381018673364,"sku":"3-6833-4090","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":47381018706132,"sku":"K1-6833-4090","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":47381018738900,"sku":"K2-6833-4090","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":47381018771668,"sku":"K3-6833-4090","price":1087.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002055_4_46f3dc67-fdab-4493-8bf2-9d43e86732fb.webp?v=1771666997","url":"https:\/\/fasthemis.com\/products\/6833-4090-392-6-4-small-block-mopar-hemi-gen-iii-fx-series-12cc-dish-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-945-comp-height-1-21","provider":"FastHemis","version":"1.0","type":"link"}