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The Wiseco Professional Series forged piston is a single, competition-ready replacement built for Subaru EJ20 applications. This piston has a 92.51 mm bore, 33.34 mm compression height and a 0.9055 in pin diameter and ships with premium rings. Forged from 2618 aluminum with ArmorGlide skirt coating, it features precision ring grooves, an anti‑detonation groove, forced pin oiling and a fully machined crown for durability.
Wiseco Subaru WRX EJ20 R/DOME 9250TX Piston Shelf Stock
