The Manley Platinum Series pistons are high-performance forged components designed for Subaru WRX STi models equipped with the EJ257 engine. Crafted from 2618 alloy forging, these pistons provide exceptional strength and durability under demanding conditions. They feature proven cam and barrel skirt profiles, moly skirt coatings on select part numbers, and tool steel wrist pins, ensuring reliable operation during high-performance tuning and racing applications. These pistons are engineered to deliver consistent power, improved thermal stability, and longevity, making them ideal for enthusiasts seeking a robust upgrade for their engine.
Designed specifically for 2004 and newer Subaru WRX STi models with a 99.5mm bore and 8.5:1 compression ratio, these pistons serve as a direct replacement for stock components. They are suitable for street, track, and performance tuning scenarios, offering a reliable upgrade for increased horsepower and efficiency. The set includes pistons and rings, and installation requires standard engine assembly procedures. Compatible with EJ257 engines, these pistons are an excellent choice for professional engine builders and serious tuners aiming for superior performance and durability.
