CP Pistons brand Yamaha YZ450F forged piston kit. Project X series with coated skirt. For use in stock, high performance and racing engines; for use with a standard size bore of 97mm; and stock stroke of 60.8mm; 13.0-1 compression ratio; kit includes light weight piston; light weight piston pin; piston rings and pin lock rings. Fits 2010 - 2014 model YZ450
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