CP Pistons brand 2004 - 2008 Honda CRF250R Project X forged Platinum piston kit. For use in high performance and racing engines; for use with a standard size bore of 78mm; and stock stroke of 52.2mm; 14.5-1 compression ratio; Piston uses a pin that is 1mm smaller than stock and works with Carrillo connecting rod that is 2mm longer than stock. kit includes light weight piston; light weight piston pin; piston rings and pin lock rings. In addition to the standard features, this FULL RACE piston also includes coated piston skirts, dual pin oiling, broached oilers and lateral gas ports to provide improved ring seal and greater power. Project X series piston. NOTE: This piston is for use ONLY with the matching CP Carrillo Platinum Kit connecting rod cpho2515ca03622n
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