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The Wiseco Professional Series forged piston set is made for Subaru EJ20 engines and supplied as a set of four with premium rings. This kit specifies a 92.00 mm bore, 32.66 mm compression height and a 0.9055 in. pin diameter. Forged from 2618 aluminum, it adds precision ring grooves, an anti‑detonation groove, ArmorGlide skirt coating and forced pin oiling to handle heavy to severe duty race applications.
Wiseco Subaru WRX 4v R/Dome 8.4:1 CR 92mm Piston Shelf Stock Kit
