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Manley forged piston set for 2004+ Subaru WRX STi (EJ257) 83mm stroker with a 100mm plus bore includes the piston-and-ring package sized to the stated dimensions. These Platinum Series pistons use domestic 2618 alloy forgings and refined skirt profiles to help preserve cylinder wall integrity while delivering precise ring groove machining. The set is intended for engine builders working on specific EJ257 bore and stroke combinations.
Manley 04+ Subaru WRX STi (EJ257) 83mm Stroker 100mm +0.5mm Bore 8.5:1 Dish Piston Set with Rings
