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JE Pistons forged piston kit for Subaru EJ257 with EJ20 head, 100mm bore and 8.5:1 compression, supplied as a set of four. Forged from 2618 aluminum and machined in the USA, these pistons use JE’s Forged Side Relief forging to minimize friction. Accumulator grooves and optional skirt coating help improve ring seal and reduce wear. Kit includes wrist pins, locks and JE Pro Seal rings for reliable, high-demand use.
JE Pistons SUB STI EJ257 Block w/ EJ20 Head 100mm Bore CR 8.5 KIT Set of 4 Pistons
