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The CP Piston and ring set for Subaru EJ257 (WRX STI) is a set of four pistons sized to 99.75mm bore, +0.25mm oversize, with a 10.0 compression ratio specification. Supplied as a complete four-cylinder piston and ring set, it is intended for engine rebuilds or overbore work on compatible EJ257 applications where those bore and size specifications are required.
CP Piston & Ring Set for Subaru EJ257 WRX STI- Bore (99.75mm)-Size (+0.25mm)- CR (10.0) - Set of 4
