Manley Platinum Series forged piston set for 2004+ Subaru WRX/STi (EJ257) DE-stroker build using 75mm components with a 99.75mm bore at +0.25mm and an 8.5:1 compression ratio. Platinum Series pistons use domestic 2618 alloy forgings, with proven cam and barrel skirt profiles, tool steel wrist pins and moly skirt coatings on select SKUs, plus precise ring lands and groove machining for reliable ring seal.
Manley 04+ Subaru WRX/STi (EJ257) 75mm DE-Stroker 99.75mm +.25mm Size Bore 8.5:1 Piston Set (ED)