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The Wiseco Professional Series forged piston set is specified for Subaru EJ257 WRX/STI engines and supplied as a set of four with premium rings. This kit lists a 100.00 mm bore, 30.70 mm compression height and a 0.9055 in. pin diameter. Forged from 2618 aluminum, the design includes precision ring grooves, anti‑detonation profiling, ArmorGlide skirt coating and forced pin oiling for heavy‑duty performance.
Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc 100mm Piston Shelf Stock Kit
