Forged Piston Set, 92.00mm Bore, 8.5:1 Compression Ratio

The CP Pistons SC7399 is a set of forged pistons engineered for maximum performance and horsepower in Subaru EJ20 WRX engines. Constructed from durable 2618 forged aluminum, these pistons are designed to endure the intense heat and pressures generated by high-compression normally aspirated, turbocharged, or supercharged motors. These pistons feature a 92.00mm bore and an 8.5:1 compression ratio, making them an excellent choice for supercharged or turbocharged racing engines that utilize race gas, alcohol, or E85 fuels. Each piston is rated to handle up to 200 horsepower per cylinder, especially when paired with upgraded 9310 wrist pins. The dome piston design and a ring size of 1.2mm, 1.5mm, and 4.0mm ensure optimal sealing and performance. Key specifications include a 75mm stroke, 130.5mm rod length, and a 32.639mm compression height. These pistons are designed with oversized valves and high-lift camshafts in mind, and are available in a variety of compression ratios and bore sizes, reflecting CP-Carrillo's commitment to extensive research and development with leading names in motorsports.