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This Manley single forged piston is specified for 2004+ Subaru WRX STI (EJ257) applications, STD stroke 99.75 mm with a +0.25 mm bore and a 9.8:1 dish profile. Manley’s Platinum Series uses 2618 alloy forgings with proven cam-and-barrel skirt profiles, chrome-moly wrist pins and optional moly skirt coatings. Precision fixturing and exact ring lands and grooves support improved ring seal and durability for high-demand builds.
Manley 04+ Subaru WRX STi (EJ257) STD Stroke 99.75mm +.25mm Bore 9.8:1 Dish Piston - Single
