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This JE Pistons single forged piston is built for Subaru STI EJ257 engines with a 100.00 mm bore and 8.5:1 compression ratio, configured as the left-side piston. JE Pistons are produced in the USA to application-specific tolerances for demanding performance use and are supplied with premium piston rings, wrist pins and locks. The piston design supports engine rebuilds where OEM-replacement forged components are required.
JE Pistons SUB STI EJ257 Block 100mm Bore CR 8.5 (Left Side) Single Piston
