The Manley Performance EH257 Piston Set is a high-performance forged piston designed for Subaru WRX and STI models from 2004 onward. Part of the Platinum Series, these pistons feature 2618 alloy forgings, which provide exceptional strength and durability under demanding conditions. The proven cam and barrel skirt profiles enhance stability and reduce piston slap, while moly skirt coatings on select part numbers improve wear resistance. Equipped with tool steel wrist pins, these pistons are engineered for superior performance and longevity, making them ideal for professional engine builders and tuners seeking reliable, high-quality components for performance applications.
This piston set is specifically designed for 2004+ Subaru WRX and STI models with a 99.75mm bore and +0.25mm 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 projects. The kit includes the pistons and wrist pins, ensuring a straightforward installation process. Compatible with engines requiring these specifications, this set provides a robust foundation for enhancing engine performance and durability in high-performance or modified Subaru applications.
