BAFANG G020 48V 500W Front Hub Motor Electric Bike Conversion Kit. A front-hub electric drive kit for converting an existing pedal bicycle into a motor-assisted bike. The 48V, 500W motor is built to be fitted to a front wheel, and the kit can be set up to run as a full electric bike, as a pedal-assist bike, or as a push-assist bike, so the rider chooses how much work the motor does. The kit is rated for a top speed of about 38 to 40 km/h and is designed to brake-cut the motor when the brake levers are squeezed. It is compatible with both V-brakes and disc brakes. Installation is supported by a written manual and a video guide. Standard contents include the front wheel with motor, controller, brake lever or hydraulic brake sensor, thumb throttle, controller case, left pedal-assist sensor, extension cable, 1T4 cable and headlight. 1 x 1 x 1 inches.