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A Manley Platinum Series forged piston specified for 2004+ Subaru WRX STI (EJ257) in standard size, Grade A bore. Manufactured from 2618 alloy forgings with cam-and-barrel skirt profiles and premium chrome moly wrist pins, it features exacting ring lands and grooves and tooling that ensures ring groove to skirt squareness. Suited for high-quality builds demanding tight tolerances and reliable ring seal.
Manley 04+ WRX STi (EJ257) Size (STD) Stroke (79mm) Bore (99.50mm Grade A) SINGLE Piston w/ Rings
