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The JE billet piston kit for Subaru EJ‑series is a four‑cylinder set sized to a 3.917 in. bore with an 8.80:1 compression ratio and an inverted dome/dish profile. JE forges and machines components in the USA, tailoring each piston to engine needs. The kit includes premium rings, wrist pins and locks, and uses Forged Side Relief, accumulator grooves and optional skirt coatings to reduce friction and support consistent ring sealing in demanding use.
JE Pistons SUB 8.8:1 BILLET KIT Set of 4 Pistons
