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JE Pistons forged single piston for Subaru EJ series applications, specified for inverted dome/dish geometry with a 3.917 in. bore and 8.50:1 compression ratio. This right‑side piston is engineered for high‑demand use and produced in the USA, making it suitable for engine rebuilds where application‑specific forged pistons are required to maintain durability and consistent combustion characteristics.
JE Pistons SUB STI EJ257 Block w/ EJ20 Head 99.5mm Bore CR 8.5 (Right Side) Single Piston
