CP Piston & Ring Set for Subaru EJ257 WRX STi
These CP Pistons for the Subaru EJ257 WRX STi 2.5L Engine are engineered to withstand the extreme cylinder pressure common in turbocharged and nitrous applications. These Pistons will fit all 2004+ EJ257 WRX STi Engines. Wrist Pins and High Performance Piston Rings are included at no additional cost. CP does not provide Wrist Pin locks for the Subaru Engine, as these pistons are designed to use the Factory Subaru Wrist Pin Locks.