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CP forged piston and ring set for the Subaru EJ25 used in WRX/STi applications is supplied as a single piston in standard bore (99.5mm) form with a 10:1 compression ratio. The set includes matching rings sized to STD dimensions for direct-fit engine rebuilds or repairs where OE-compatible pistons are required. It simplifies parts matching during a rebuild by providing piston and ring components sized to factory specifications.
CP Piston & Ring Set for Subaru EJ25 WRX STi - Bore (99.5mm) - Size (STD) - CR (10) - Single Piston
