{"product_id":"6857-4090-6-2-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-945-comp-height-1-275","title":"DSS Racing FX Series Forged +4cc Dome Top Pistons: Fits Jeep Grand Cherokee \/ Dodge Durango \/ Ram","description":"\u003ch3\u003eDSS Racing FX Series Forged +4cc Dome Top Pistons\u003c\/h3\u003e\u003cp\u003eFits Most Chrysler \/ Dodge \/ Jeep \/ Ram 6.2L Hellcat \u0026amp; Trackhawk Models\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e1-6857-4090 \/ 2-6857-4090 \/ 3-6857-4090 \/ K1-6857-4090 \/ K2-6857-4090 \/ K3-6857-4090\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe DSS Racing FX Series Forged +4cc Dome Top Pistons are precision-engineered performance components designed specifically for Chrysler, Dodge, Jeep, and Ram 6.2L Hellcat and Trackhawk engines. Crafted to enhance combustion efficiency and durability, these pistons are ideal for enthusiasts and professional builders seeking to maximize power output and reliability in high-performance applications.\u003c\/p\u003e\u003cp\u003eFeaturing a +4cc dome top design, these pistons increase compression ratios while maintaining optimal combustion chamber shape. They are compatible with the 376 Small Block Mopar Hemi Gen III platform and engineered to fit a 4.090\" bore, making them a direct fit for most Hellcat engines without extensive modifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDesigned with advanced engineering and high-quality materials, the DSS Racing FX Series pistons offer a range of features that support enhanced engine performance and longevity:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged construction for superior strength and durability under extreme conditions\u003c\/li\u003e\n\u003cli\u003e+4cc dome top design to increase compression and improve combustion efficiency\u003c\/li\u003e\n\u003cli\u003eCompatible with 4.090\" bore size, fitting most Chrysler\/Dodge\/Jeep\/Ram 6.2L Hellcat and Trackhawk engines\u003c\/li\u003e\n\u003cli\u003eComp height of 1.275\" for precise piston-to-deck clearance and optimal quench\u003c\/li\u003e\n\u003cli\u003eRing groove dimensions of 1.2\/1.2\/3mm to accommodate high-performance piston rings\u003c\/li\u003e\n\u003cli\u003ePin diameter of .945\" available in full-floating or press-fit options for versatility\u003c\/li\u003e\n\u003cli\u003eDesigned for use with 6.2\" connecting rods and a 3.578\" stroke\u003c\/li\u003e\n\u003cli\u003eAvailable in multiple compression volume options (65cc, 74cc, 85cc) to tailor compression ratios from approximately 9.59:1 to 12.06:1\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEach piston is forged from premium-grade aluminum alloy, ensuring a lightweight yet robust component capable of withstanding the high pressures and temperatures typical of forced induction Hellcat engines. The dome top shape is precisely machined to optimize combustion chamber dynamics, promoting efficient flame propagation and reducing the risk of detonation.\u003c\/p\u003e\u003cp\u003eThe pistons feature carefully engineered ring grooves and pin bosses to maintain ring seal integrity and reduce friction. The option for full-floating or press-fit wrist pins allows builders to select the best fitment for their specific engine build and performance goals.\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 6.2L Hellcat and Trackhawk engines, requiring minimal modifications during installation. Their compatibility with the 4.090\" bore and standard stroke and rod lengths ensures a straightforward swap for performance upgrades or engine rebuilds.\u003c\/p\u003e\u003cp\u003eProfessional installation is recommended to ensure proper piston ring end gap, pin fitment, and torque specifications are met for optimal engine reliability and performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of four DSS Racing FX Series Forged +4cc Dome Top Pistons\u003c\/li\u003e\n\u003cli\u003eChoice of full-floating or press-fit wrist pins (depending on SKU)\u003c\/li\u003e\n\u003cli\u003eDetailed specifications for ring groove dimensions and piston geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are perfect for performance enthusiasts, engine builders, and racers looking to upgrade their Hellcat or Trackhawk engines for increased compression and durability. They are especially suited for forced induction setups, street performance builds, and track applications where reliability under high boost and RPM is critical.\u003c\/p\u003e","brand":"DSS Racing","offers":[{"title":"FX-1 4032 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381001404628,"sku":"1-6857-4090","price":739.95,"currency_code":"USD","in_stock":true},{"title":"FX-2 2618 Alloy \/ Pistons - Pins and Locs Without Rings","offer_id":47381001437396,"sku":"2-6857-4090","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":47381001470164,"sku":"3-6857-4090","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":47381001502932,"sku":"K1-6857-4090","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":47381001535700,"sku":"K2-6857-4090","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":47381001568468,"sku":"K3-6857-4090","price":1147.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/0002129_4_b0a85011-0ee9-48f1-ba50-83a167ee11c5.webp?v=1771667027","url":"https:\/\/fasthemis.com\/products\/6857-4090-6-2-small-block-mopar-hemi-gen-iii-fx-series-4cc-dome-top-gen-iii-hemi-forged-piston-set-4-090-inch-bore-pin-dia-0-945-comp-height-1-275","provider":"FastHemis","version":"1.0","type":"link"}