Controller Housing: The controller housing is made of high quality metal with a grooved design, which protects the internal circuits from thermal overload due to good heat dissipation. Brushless Gear Hub Motor: The brushless gear hub motor is made of aluminum alloy rim and treated with fine craftsmanship, which effectively enhances the edge of the rim, looks light and high end, has strong bearing capacity, and is far more comfortable than other types of motors, realizes noise free operation, and allows you to fully enjoy fun to ride. LCD3 Display Meter Function: The LCD3 display meter has a variety of functions that make it easier for you to view the data on the panel. While cycling, the product will display many useful data on your bike, such as battery level display, backlight display, headlight display, brake display, ambient temperature, motor temperature, one way time, etc. Wide Range of Application: 48V 500W rear drive motor kit is suitable for bicycle lithium battery modification, DIY electric bicycle, electric vehicle, electric scooter, folding bike, etc. Easy to maintain, electric bicycle, moped, mountain bike conversion motor, high efficiency, greatly improves riding fun, suitable for cyclists who like a challenge. Product Package List: Bicycle lithium battery conversion kit includes 48V 500W rear drive motor + 22A controller + LCD3 dispaly meter + 130X thumb throttle + 8C power assist sensor + power off brake lever pair + motor extension cable + spokes + spoke nuts and installation tools + manual. 125x66x39mm / 4.9×2.6×1.5in LCD3 Display: Approx. 95x65mm / 3.7×2.6in Motor Type: Rear Drive Motor Motor Connector: Waterproof Connector (9pin) Motor Rated Voltage: 48V Motor Rated Power: 500W Motor Speed: about 30-32km/h Motor Speed: 265-325 RPM Motor Torque 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 Location: Rear Drive Motor Structure: Brushless Gear Hub Motor Motor Magnet Height: 22H Motor Magnet Pole Number: 20 Motor Operating Temperature: -20°-45° 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. LCD3 Display Instrument Function Description: Up button, switch button, down button, battery capacity indication, backlight and headlights, brake display, one way time, total travel time, battery display, motor Celsius temperature, motor Fahrenheit temperature, ambient celsius temperature, ambient fahrenheit, 6km/h thrust assist, cycling speed , cycling speed (imperial), maximum speed, average speed, distance , distance (imperial), cycling distance, total distance, battery voltage, power assist sensor sign, cruise function. Controller Wire Color Definition: 1. Black single big head cable: waterproof motor cable (9pin) 2. Red and black single big head line: power line 3. Red, blue, black, green and yellow single row five wire port: dispaly line 4. Red and blue lines (two): power off brake levere line 5. Red black white lines: thumb throttle line 6. Brown, black and yellow line: power assist sensor line. 1 x Display Mounting Bracket. 4 x Display Mounting Bracket Gasket. 2 x Display Mounting Bracket Screws. 2 x Power off Brake Lever. 1 x Motor Extension Cable. 40 x Spoke Nut Cap. 1 x Spoke Installation Tool. Pay attention to the size of the motor. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 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.