Mounting Position : Rear Drive Rated Voltage (V) : 48V Max Torque N. M Wheel Size Option (Inch) : 26/27.5/700C Freehub Body : Cassette Gear Type : Gear Drive Motor Type : Brushless Number of Turns (T) : 12 Spoke Specifications : 36H13G Rated Efficiency (%) : >80% Noise level (dB). 1 pcs Rear Wheel hub motor. 1 pcs Display (optional) 1 pcs Left PAS Sensor 1 pcs Control Box 1 pcs Motor Controller 1 pair Brake Lever or brake sensors 1 pcs Thumb Throttle 1 pcs 1T4 Cable 1 pcs Headlight(free) 1 pcs Plastic Strap.