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The JE Pistons forged piston kit for Subaru EJ257 (sub WRX/STI) features a 99.5 mm bore and is made as a matched four-piston set for specific EJ applications. Forged from 2618 aluminum in the USA, these pistons include JE Pro Seal rings, wrist pins and locks, and incorporate designs like forged side relief, accumulator grooves and optional skirt coatings to reduce friction, improve ring seal and deliver durability for demanding performance use.
JE Pistons SUB WRXHD/STI EJ257 Block w/ EJ20 Head 99.5mm Bore Standard Size KIT Set of 4 Pistons
