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The Manley Platinum Series piston set is built for 2004+ Subaru WRX/STi (EJ257) stroker builds with an 83mm stroke, 99.75mm bore and 9.8:1 dish. These pistons use 2618 alloy forgings and incorporate tool steel wrist pins, with moly skirt coatings on select part numbers. Manley’s manufacturing focuses on precise ring lands, cam and barrel skirt profiles and forgings intended for high-demand engine builds.
Manley 04+ Subaru WRX/STi (EJ257) 83mm Stroker 99.75mm Bore 9.8:1 Dish Extreme Duty Piston Set
