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The Wiseco Professional Series forged piston set for Subaru EJ20 applications is supplied as a set of four with premium rings. It lists a 92.50 mm bore, 32.66 mm compression height and a 0.9055 in. pin diameter. Forged from 2618 aluminum, these pistons include precision ring grooves, anti‑detonation features, ArmorGlide skirt coating and forced pin oiling for demanding, high‑stress engine builds.
Wiseco Subaru WRX 4v R/Dome 8.4:1 CR 92.5 Piston Shelf Stock Kit
