The Manley Performance EH257 piston set is a high-performance component designed for Subaru WRX and STI models from 2004 and newer. Part of the Platinum Series, these pistons are crafted from 2618 alloy forgings, offering exceptional strength and durability. They feature proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings on select part numbers, ensuring superior performance under demanding conditions. These pistons are engineered to provide reliable power and longevity, making them ideal for professional engine builders and tuners seeking a high-quality upgrade for forced induction or high-performance applications.
This piston set is specifically designed for 2004+ Subaru WRX and STI models with a 99.55mm bore and a +0.05mm size, with an compression ratio of 8.5:1. It serves as a direct replacement or upgrade for stock pistons, suitable for street, track, or tuning applications. The kit includes the pistons, wrist pins, and necessary components for installation. Compatibility is optimized for engines requiring the EH257 specifications, providing a robust foundation for performance enhancements and engine rebuilds.
