~This kind of motor is applied for electric bicycle or normal bicycle conversion, can be installed on the front wheel or rear wheel.
Motor type:Brushless High-speed Geared DC motor
Rated voltage:36V/48V for optional
Equipped wheel diameter: 20 to 28inch
Required rear fock width:135mm
Can be front drive or Rear wheel drive,up to your option. The images are Rear wheel drive motor, can be attached the Brake disc and Free wheel.