MegaBrand 36v 800W 26in Rear Electric Bicycle Engine Motor Conversion Kit Pedal Assistance System (PAS): let you enjoy cycling while driving electric bike Dual Mode Controller: Motor works under Hall effect and non-Hall effect, extend life for electric bike Provides you with a whole wheel with tire, not just the tire frame Takes less than hour to install The kit includes motorized wheel, motor controller, speed throttle, wire harness