... , 3 motor: 180-250W high speed 4 Controller: 36V/48V Electric bicycle conversion kits 1. Charger: 36V/48V2. Wheel size: 20",26",28 ... /48V4. Battery(24V/36V,10Ah/12Ah)5. Tyres for Electric bicycle, Electric bike, Electric Motorcycle6. Some parts: motor wheel,handle bar,brake bar ... ,250W,350W,500W,800W,1500W,2000W,etc we can supply electric bicycle conversion kits