Electric bicycle front wheel conversion kit features 36V 750W hub motor for efficient and noiseless running Aluminum alloy frame for durability and stability; thumb throttle with 3 indicators for displaying battery status Fit for any 20' bicycle frame with 3 15/16' front dropout spacing; compatible for universal disc brake and V brake Electric bike conversion kit includes necessary components for installation Hand brakes shut off the motor automatically for preventing the motor from overheating