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Manley Forged Piston for 2004+ Subaru WRX/STI (EH257)

Enhance your Subaru WRX/STI's engine performance with this high-quality Manley forged piston. Designed specifically for the 2004 and newer WRX/STI models featuring the EH257 engine, this piston boasts a 99.50mm standard bore and an 8.5:1 compression ratio with a dish top, making it ideal for various performance applications.

Superior Construction and Performance

• 2618 Alloy Forgings: Crafted from domestic 2618 alloy, these pistons offer exceptional strength and durability to withstand demanding driving conditions.
• Chrome Moly Wrist Pins: Comes standard with premium Chrome Moly wrist pins for robust performance. Upgrades to 9310 and Turbo Tuff/DLC alloys are available for even greater resilience.
• Precision Machining: Features exacting ring lands and grooves for optimal ring seal and increased power output.
• Optimized Profiles: Cam and barrel profiles are engineered to maximize power generation while minimizing wear on cylinder walls.
• Unique Fixturing: Manley's innovative fixturing ensures skirt turning and ring groove machining are performed in a single operation, guaranteeing perfect squareness for ultimate reliability.

This single forged piston is a critical component for enthusiasts looking to rebuild or upgrade their Subaru WRX/STI engine. Trust Manley Performance for precision-engineered parts that deliver results.

Shop Manley Performance pistons at GGCRACING.