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Manley Platinum Series pistons for 2004+ Subaru WRX STi (EJ257) are supplied with a 100.25mm bore and standard stroke, featuring a 17cc dish. These pistons use 2618 alloy forgings and chrome-moly wrist pins, with precise ring lands, cam and barrel skirt profiles to support ring seal and cylinder wall compatibility—attributes cited by engine builders and tuners in the product description.
Manley 04+ Subaru WRX STi (EJ257) 100.25mm Bore STD Stroke -17cc Dish
