16"/20"/24"/26"/27.5"/28"/29/700C---Optional. Rear drive open size (mm). Conversion Kit not include Battery.
1 PCS 350W Rear Hub Motor with Rim and Spokes. 1 PCS 350W Motor Controller. 1 PCS Controller Bag(not battery).
1 PCS Display(LCD3, LCD5, LCD8H, LED880, LED900S option).