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CP Pistons forged piston and ring set is supplied for the Subaru EJ25 WRX STi with 100.0mm bore and +0.5mm oversize, providing a matched set of four pistons engineered to the specified 10:1 compression. The set is a direct internal engine component replacement tailored to the stated bore and size. It’s sold as a complete four-cylinder piston and ring package for accurate rebuild fitment.
CP Piston & Ring Set for Subaru EJ25 WRX STi - Bore (100.0mm) - Size (+0.5mm) - CR (10) - Set of 4
