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The Manley Platinum Series forged piston set for 2004+ Subaru WRX/STi (EJ257) is supplied for a 100.00 mm bore (+0.50 mm oversize) and is designed for serious builders. It leverages domestic 2618 alloy forgings, chrome-moly wrist pins, tailored cam-and-barrel skirt profiles, and tight ring groove control to support robust rebuilds and higher-stress applications where precision and durability matter.
Manley 04+ Subaru WRX/STi (EJ257) 75mm DE-Stroker 100.00mm +.50mm Size Bore 8.5:1 Dish Piston Set
