CP forged piston and ring set for Subaru EJ257 WRX/STI stroker applications supplies four pistons sized to the listed bore and compression specs for high‑performance builds. Offered as a matched set, it provides the core components for an engine rebuild or stroker conversion using the EJ257 platform, following the specified dimensions and crankshaft clearance needs implied by the bore and pin data.
CP Piston & Ring Set for Subaru EJ257 WRX/STI (Stroker)-Bore (99.5mm)-Size (STD)-CR (10.0)-Set of 4