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Forge Your Subaru's Powerhouse with Manley Performance Piston Sets

Unlock the true potential of your 2004 and later Subaru WRX STi (EJ257 engine) with Manley Performance's high-strength Forged Piston Set. Engineered for performance enthusiasts, these pistons are designed to handle increased boost pressures and demanding driving conditions, providing a robust foundation for your modified engine.

Precision Engineered for Performance:

• Premium 2618 Alloy Forgings: Crafted from domestic 2618 alloy, these pistons offer superior strength, durability, and resistance to detonation, ensuring reliable performance under extreme loads.
• Optimized Bore and Compression: Featuring a standard stroke with a 99.75mm bore and a 0.25mm oversize, these pistons achieve a 9.8:1 compression ratio, ideal for maximizing power output in modified EJ257 engines.
• High-Quality Components: Each set includes premium Chrome Moly wrist pins for enhanced strength and reliability. The pistons are designed with exacting ring lands and grooves to ensure optimal ring seal and reduced blow-by.
• Advanced Skirt and Cam Profiles: Manley's unique cam and barrel profiles on the piston skirts minimize friction and wear on cylinder walls while generating substantial power, ensuring a smooth and efficient operation.
• Single Operation Machining: Utilizing unique fixturing, Manley machines skirt turning and ring groove operations in a single setup, guaranteeing superior squareness between the ring grooves and the piston skirt for maximum performance and longevity.
• Direct Fitment: These pistons are specifically designed for the 2004-2012 Subaru Impreza WRX STi models equipped with the EJ257 engine.

Whether you're building a dedicated track car or a high-performance street machine, Manley Performance pistons are the choice for those who demand the best. Ensure your Subaru's engine can withstand the power you're aiming for. Equip your WRX STi with the strength and precision of Manley. Find these pistons and more performance engine components at GGCRACING.