New top & bottom end rebuild kit for Yamaha YZ 250F, Each kit contains everything you need to complete your rebuild the right way, the first time- crankshaft and connecting rod, crankshaft bearings, Namura std bore piston and complete gasket & seal kit made to meet or exceed OEM* 
All new assembly.

Photo is generic, you will receive the correct parts for the model listed

* Crankshafts are sold complete with Wiseco connecting rods and inner crankshaft webs.
* Factory assembled and trued to within .001.
* Ready for installation.
* Crankshafts are completely rebuildable.