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The Manley Platinum Series forged piston set is built for 2004+ Subaru WRX/STi EJ257 stroker applications and uses domestic 2618 alloy forgings. These pistons feature precise cam and barrel skirt profiles, exacting ring lands and grooves, and premium wrist pin options to support high-performance engine builds. They target engine builders and tuners seeking durable, race‑proven piston technology.
Manley 04+ Subaru WRX/STi (EJ257) 83mm Stroker 99.5mm STD Size Bore 8.5:1 Dish Piston Set
