Brushless Gear Hub DC Motor: The brushless gear hub DC motor is made of aluminum alloy rim and processed with fine craftsmanship, which effectively enhances the edge of the rim, strong bearing capacity, and is far more comfortable than other types of motors, realizes noise free operation, and allows you to fully enjoy riding. Controller Housing and Display Meter: The controller housing is made of metal with a grooved design, which protects the internal circuits from thermal overload due to good heat dissipation. The display meter is made of ABS plastic material, which is light, strong and durable, with fine workmanship, good toughness and waterproof performance, providing better protection for the internal circuit and making it more durable. Multifunctional LCD7U Display: While cycling, the display will display many useful data on your bike, such as battery level display, backlight display, headlight display, Brake display, temperature, one way time, total travel time, current speed, average speed, maximum speed, total one way distance, 6km/h thrust assist, cruise function, display, etc. Wide Range of Applications: 36V 250W rear drive 20 inch rear drive rotating flywheel kit is suitable for bicycle, mountain bike, lithium battery modified rear drive rotating flywheel electric bike, DIY electric bike, electric bike, electric scooter, folding bike, etc; easy to maintain, electric bike, moped, mountain bike modified conversion motor, high efficiency, greatly improve riding fun, suitable for cyclists who like challenges. Bicycle Lithium Battery Conversion Kit: Bicycle lithium battery modified 20 inch rear drive rotating flywheel kit includes 36V 250W rear drive 20 inch motor wheel, 15A controller, LCD7U display, thumb throttle, 8 magnetic boosters, a pair of power off brake levers, controller box, manual. Item Type: Bicycle Lithium Battery Modified 20 inch Rear Drive Rotating Flywheel Kit. Material: Stainless Steel + Aluminum Alloy + ABS Plastic. Color: As Pictures Shown Weight: Approx. 5.9kg / 13lb. Motor Wheel Type: Rear Drive Motor Wheel (Waterproof Joint) Motor Rated Voltage: 36V Motor Rated Power: 250W Motor Speed: About 25-28km/h Motor Speed: 207-270 Rpm Motor Torque N. M: 29-31.2 N. Motor Opening Size (mm): Approx. 135-142mm / 5.3-5.6in. Motor Matching Controller Current: 15A Motor Rim: P19D Motor Torque Arm: M 14 Brake Disc for Motor: 160mm / 6.3in Motor Brake Type: V Brake / Disc Brake Universal Motor Wheel Position: Rear Wheel Motor Structure: Brushless Gear Motor Motor Magnet Height: 24H Motor Magnet Pole Number: 20 Motor Operating Temperature: Minus 20°-45° Controller Connector Type: Ordinary Connector (Except Motor Waterproof Connector) Controller Rated Voltage: DC 36V, 48V Controller Rated Current: 7A Controller Maximum Current: 15±1A Controller Speed Setting: 1-4.2V Controller Brake Input: Low Level Controller Low Voltage Protection: DC 30/40±0.5V. Controller Wire Color Definition: 1. Black single big head wire: motor wire (waterproof connector) 2. Red and black single big head line: power line 3. Red, blue, black, green and yellow single row five wire port: display line (5pin) 4. Red and blue lines (two): power off brake handle line 5. Red, black and white lines: thumb throttlel (3pin) 6. Brown, black and yellow line: power assist sensor line (3pin). LCD7U Display Function Description: Up button, switch button, down button, power assist sensor sign, battery capacity indication, cruise function, one way time, total travel time, throttle display, 6km/h thrust assist system, riding speed , riding line speed (Imperial), maximum speed, average speed, distance , distance (imperial), travel distance, total distance, battery voltage, brake display, backlight and headlights, display. 1 x Motor Wheel. 1 x LCD Display. 1 x LCD Display Manual. 2 x Power off Brake Lever. 1 x Controller Box. 2 x Controller Box Mounting Ring. 8 x Controller Box Screw. Note the opening of the rim. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.