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Wiseco Professional Series pistons for the Subaru EJ257 with a 99.75 mm bore are forged race pistons intended for heavy to severe duty builds. Manufactured from 2618 aluminum in the USA, they feature precision ring grooves, an anti-detonation groove, ArmorGlide skirt coating to reduce friction and fully machined crowns. The set of four is aimed at high‑duty WRX/STI 4-valve applications.
Wiseco Subaru EJ257 WRX/STI 4v Dish -24cc 99.75 Piston Shelf Stock Kit
