{"product_id":"ross-racing-forged-pistons-99617-ros-99617","title":"Ross Racing Forged Aluminum Pistons Set: Fits most Hemi 5.7 \/ 6.1 \/ 6.2 \/ 6.4L","description":"\u003ch3\u003eRoss Racing Forged Aluminum Pistons Set\u003c\/h3\u003e\u003cp\u003eChrysler \/ Dodge \/ Jeep \/ Ram 5.7L Hemi \/ 6.1L SRT8 \/ 6.4L 392 \/ 6.2L Hellcat \u0026amp; Trackhawk\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e99617\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Ross Racing Forged Aluminum Pistons Set is engineered for high-performance Chrysler, Dodge, Jeep, and Ram engines, including the 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat \u0026amp; Trackhawk variants. Designed to withstand the rigors of stroked engine builds, these pistons deliver enhanced durability and reliability under extreme conditions. Ideal for enthusiasts and professional builders seeking to maximize power output while maintaining engine integrity, this set offers a precision fit and superior strength compared to stock components.\u003c\/p\u003e\u003cp\u003eEach piston features a dished crown with two valve reliefs, optimizing combustion chamber volume and valve clearance for improved performance and efficiency. Sold as a complete set of eight, these pistons come with piston rings and wrist pin retainers, providing a comprehensive upgrade solution for your high-performance build.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eRoss Racing pistons combine advanced design and quality materials to meet the demands of high-output Hemi and SRT engines. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged aluminum construction for superior strength and lightweight performance\u003c\/li\u003e\n\u003cli\u003e4.080-inch (103.632mm) bore diameter with a 4.050-inch stroke, tailored for stroked engine configurations\u003c\/li\u003e\n\u003cli\u003eDish-style piston crown with two valve reliefs to ensure optimal valve clearance and combustion efficiency\u003c\/li\u003e\n\u003cli\u003eCompression height of 1.085 inches for precise deck clearance and piston-to-head fitment\u003c\/li\u003e\n\u003cli\u003ePress-fit or floating wrist pin design with included retainers for secure piston pin retention\u003c\/li\u003e\n\u003cli\u003eFile-fit piston rings with thicknesses of 1.20mm (top and second ring) and 3.00mm (oil ring) for reliable sealing\u003c\/li\u003e\n\u003cli\u003ePin diameter of 0.927 inches engineered for durability and compatibility with factory components\u003c\/li\u003e\n\u003cli\u003eSold as a set of 8 pistons, perfect for complete V8 engine rebuilds or upgrades\u003c\/li\u003e\n\u003cli\u003eIncludes piston rings and wrist pin retainers; wrist pins are not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCrafted from high-grade forged aluminum, these pistons offer an excellent strength-to-weight ratio, reducing reciprocating mass and improving engine response. The forging process enhances grain structure and mechanical properties, ensuring durability under high combustion pressures and elevated temperatures typical of performance Hemi and SRT engines.\u003c\/p\u003e\u003cp\u003eThe dished piston design with dual valve reliefs is engineered to accommodate aggressive camshaft profiles and high-lift valve trains without risk of valve-to-piston contact. This design also contributes to a slightly increased combustion chamber volume (+18.70cc), which can aid in tuning compression ratios for specific performance goals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThese pistons are designed for direct fitment in Chrysler, Dodge, Jeep, and Ram engines equipped with 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat \u0026amp; Trackhawk powerplants. The set is optimized for stroked engine builds with a 4.050-inch stroke and 6.125-inch rod length. Installation requires standard engine rebuilding procedures, including precise measurement and file-fitting of piston rings for optimal sealing and performance.\u003c\/p\u003e\u003cp\u003eWrist pins are not included and must be sourced separately. The included wrist pin retainers ensure secure pin retention once installed. Proper engine assembly practices and torque specifications should be followed to guarantee reliable operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSet of 8 forged aluminum pistons\u003c\/li\u003e\n\u003cli\u003ePiston rings (file-fit, non-gapless)\u003c\/li\u003e\n\u003cli\u003eWrist pin retainers\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, professional engine builders, and racers upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram V8 engines. It suits stroked Hemi and SRT applications where increased strength, durability, and precise fitment are critical. Whether building a street performance engine, a drag racing powerplant, or a high-output track machine, these pistons provide a reliable foundation for enhanced horsepower and torque.\u003c\/p\u003e","brand":"Ross Racing","offers":[{"title":"Default Title","offer_id":47379544801492,"sku":"99617","price":789.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/4782_ros-99615_xl_a2969d15-fa9d-4a20-9e0a-d64f0b2aebd3.webp?v=1766654995","url":"https:\/\/fasthemis.com\/products\/ross-racing-forged-pistons-99617-ros-99617","provider":"FastHemis","version":"1.0","type":"link"}