CP Pistons brand Yamaha YZ250F forged piston and gasket kit. For use in high performance and racing engines; for use with a +2mm big bore of 79mm; 263cc and stock stroke of 53.6mm; 12.5-1 compression ratio; kit includes top end gaskets, light weight piston; light weight piston pin; piston rings and pin lock rings. Fits 2005 - 2013 models
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