E-bike conversion kit: It kit includes motorized wheel ,motor,controller,speed throttle,power brake,wire harness quiet and reliable brushless gearless hub motor motor spe.:24-36-48v-60v power:200w-250w-350-500-800-1000w 100mm for front wheel and 135mm for rear wheel reinforced bike rim and tire special for ebike intelligence controller (Regen-quto cruise-3speed) different kind of throttle cycle analysor can be options from ebike.ca