Wiseco Bottom End Rebuild Kit for 2003-19 Yamaha YZ250 - 72.00mm - WPC134 feed-mpn-PWFSK-Z024 4-stroke kits feature a race-ready

4-stroke kits feature a race-ready dome finish with smooth edges for improved combustion flow

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Wiseco Bottom End Rebuild Kit for 2003-19 Yamaha YZ250 - 72.00mm - WPC134 feed-mpn-PWFSK-Z024 4-stroke kits feature a race-readyWiseco Performance Complete Bottom End Rebuild Kit Part Number: WPC134 Stroke: 72. 00mm Wiseco now provides an all in one kit for your bottom end Made with the toughest materials for increased performance and life span Includes the Crankshaft Assembly, Main Bearings and Bottom End Gasket Kit Wiseco Crankshafts are 4340 steel, core hardened and tempered to reduce stress and optimize tensile strength. The crankshafts are made with a nitriding process