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Wiseco Professional Series forged pistons for the Subaru EJ257 with a 99.75 mm bore are engineered for heavy-duty and racing builds. Forged from 2618 aluminum in the USA, the pistons include precision ring grooves, an anti-detonation groove, ArmorGlide skirt coating for seizure resistance and reduced friction, plus fully machined crowns. Supplied as a set of four for WRX/STI 4-valve engines.
Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc 99.75 Piston Shelf Stock Kit
