The Gold Standard for EJ257 Builds

The Subaru EJ257 is a legendary engine, but it is notorious for needing stronger internals when pushed beyond stock levels. This CP Pistons forged piston and ring set is the ultimate upgrade for your WRX STi. With a 99.5mm bore and an 8.2 compression ratio, these pistons are specifically designed to handle high-boost turbo setups, providing the strength and thermal management required for a reliable high-horsepower build.

Engineered for the EJ257

• High-Strength Forging: Built from 2618 alloy to handle the intense cylinder pressures of a turbocharged boxer engine.
• Low Compression Ratio: The 8.2 CR is ideal for high-boost applications, helping to prevent detonation.
• Precision Ring Pack: Included rings offer superior oil control and combustion chamber sealing.
• Fitment: Designed specifically for the EJ257 engine found in 2004-2012 Subaru Impreza WRX STi models.

Don't let weak stock pistons hold back your build. These CP Pistons are the industry standard for EJ257 engine rebuilds, offering the perfect combination of weight reduction and structural integrity. Whether you are building a daily driver that needs to handle occasional track days or a dedicated drag car, this set ensures your engine can handle the power safely. The 99.5mm bore is a common choice for a fresh block hone, ensuring a perfect seal and optimal performance. Trust your engine's heart to the best in the business. Upgrade your WRX STi with high-performance parts from GGCRACING.