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Manley Platinum Series forged piston for 2004+ Subaru WRX/STI applications, single piston in +0.25mm oversize with a 99.75mm bore and 8.5:1 dish. It's offered for tuners and engine builders needing durable replacement pistons for forced-induction or high-stress setups. Manufactured from 2618 alloy forgings, these pistons feature cam-and-barrel skirt profiles, exacting ring lands and grooves, and premium wrist pin construction to support strong ring seal and cylinder longevity.
Manley 04+ Subaru WRX/STI EH257 99.75mm Bore +.25mm Size 8.5:1 Dish Extreme Duty Piston - Single
