The Manley Performance Platinum Series piston for the 2004+ Subaru WRX STI with the EJ257 engine is a high-performance single piston designed for durability and precision. Crafted from 2618 alloy forgings, this piston features proven cam and barrel skirt profiles that enhance stability under demanding conditions. It includes tool steel wrist pins and moly skirt coatings on select part numbers, providing superior wear resistance and longevity. These features make it an ideal choice for professional engine builders and tuners seeking reliable, high-quality components to maximize engine performance and durability.
This piston is specifically designed for 2004 and newer Subaru WRX STI models equipped with the EJ257 engine, featuring a 79mm stroke and 99.50mm bore, with a standard size (STD). It serves as a direct replacement or upgrade for stock pistons, suitable for both street and track applications where performance and reliability are critical. The kit includes the piston and rings, offering a straightforward installation for those looking to enhance their engine’s power output and efficiency. It is compatible with engines requiring a single piston with these specifications, making it an excellent choice for performance upgrades and rebuilds.
