Ross Racing Forged Aluminum Pistons Set

Chrysler / Dodge / Jeep / Ram 5.7L Hemi / 6.1L SRT8 / 6.4L 392 / 6.2L Hellcat & Trackhawk

99617

Overview:

The 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 & 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.

Each 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.

Key Features:

Ross Racing pistons combine advanced design and quality materials to meet the demands of high-output Hemi and SRT engines. Key features include:

• Forged aluminum construction for superior strength and lightweight performance
• 4.080-inch (103.632mm) bore diameter with a 4.050-inch stroke, tailored for stroked engine configurations
• Dish-style piston crown with two valve reliefs to ensure optimal valve clearance and combustion efficiency
• Compression height of 1.085 inches for precise deck clearance and piston-to-head fitment
• Press-fit or floating wrist pin design with included retainers for secure piston pin retention
• File-fit piston rings with thicknesses of 1.20mm (top and second ring) and 3.00mm (oil ring) for reliable sealing
• Pin diameter of 0.927 inches engineered for durability and compatibility with factory components
• Sold as a set of 8 pistons, perfect for complete V8 engine rebuilds or upgrades
• Includes piston rings and wrist pin retainers; wrist pins are not included

Construction & Design:

Crafted 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.

The 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.

Installation & Fitment:

These 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 & 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.

Wrist 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.

What's Included:

• Set of 8 forged aluminum pistons
• Piston rings (file-fit, non-gapless)
• Wrist pin retainers

Ideal For:

This 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.

Ross Racing Pistons manufactures forged aluminum pistons for serious motorsports and high-horsepower builds, offering both in-stock and fully custom piston programs for import and domestic engines. Family-run with decades of racing focus and U.S. manufacturing, Ross is a trusted choice when strength, precision machining, and reliability under boost or high RPM are non-negotiable.