Electric Bike Rear Wheel Conversion Kit 500W 48V Hub Motor Rear Drive Flywheel Brushless Gear Motor LCD3 Display 20inch Item Type: Bicycle Lithium Battery Modified Rear Drive Brushless Gear Motor Kit Material: Stainless Steel, Aluminum Alloy, ABS Plastic, Metal Motor Wheel Type: Rear Drive Brushless Toothed Motor Motor Rated Voltage: 48V Motor Rated Power: 500W Motor Speed: About 30-32km/h Motor Speed: 265-325Rpm Motor Torque (N.M): 60-63 N.M Motor Opening Size (mm): Approx. 135-142mm / 5.3-5.6in Motor Matching Controller Current: 22A Motor Rim: P19D Motor Torque Arm: M14 Brake Disc for Motor: Approx. 160mm / 6.3in Motor Brake Type: V Brake, Disc Brake Universal Motor Wheel Position: Rear Wheel Motor Structure: Brushless Gear Motor Motor Magnet Height: 22H Motor Magnet Pole Number: 20 Motor Operating Temperature: Minus 20 Degree-45 Degree Controller Connector Type: Ordinary Connector (Except Motor Waterproof Connector) Controller Rated Voltage: DC 36V, 48V Controller Rated Current: 11A Controller Maximum Current: 22±1A Controller Speed Setting: 1-4.2V Controller Brake Input: Low Level Controller Low Voltage Protection: DC 30/40±0.5V Controller Line Definition: 1. Black single wire (thick): motor 2. Five pin multi color wire: display 3. Black and red single wire: 2 power 4. Yellow, black and brown three pin wire: magnetic point assist 5. Multi color three pin wire: throttle