2010 - 2013 Honda CRF250R forged piston kit. Project X series with coated skirts. For use in high performance and racing engines; for use with a +2.2mm big bore size of 79mm; and stock stroke of 53.8mm; 13.5-1 compression ratio; 264cc kit includes top end gasket kit, light weight piston; light weight piston pin; piston rings and pin lock rings. Requires that cylinder be bored and replated
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