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Manley Platinum Series forged piston set for 2004+ Subaru WRX STi (EJ257) stroker applications, supplied complete with rings. Built from domestic 2618 alloy forgings, these pistons use proven cam-and-barrel skirt profiles, chrome‑moly wrist pins and moly skirt coatings on select SKUs to improve ring seal and reduce wear. Precision ring lands and unique fixturing ensure accurate groove-to-skirt squareness for consistent sealing and power.
Manley 04+ Subaru WRX STi (EJ257) 83mm Stroker 99.75mm +0.25mm Bore 9.8:1 Dish Piston Set with Rings
