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The Wiseco Professional Series forged piston is a single, race-focused replacement intended for Subaru EJ20 installations. It offers a 92.99 mm bore, 1.3125 in compression height and a 0.9055 in pin diameter and ships with premium rings. Forged from 2618 aluminum and finished with ArmorGlide skirt coating, it adds precision ring grooves, an anti‑detonation groove, forced pin oiling and a fully machined crown for severe-duty use.
Wiseco Subaru WRX EJ20 R/DOME 9300TX Piston Shelf Stock
