Feature:1. Included Accessories: 20 inch lithium refit rear drive kit contains 48V 1500W rear drive flywheel motor wheel, 35A controller, LCD‑S866 meter, 130X shifter, D12 assist sensor, a pair of power off brake handle, controller bag and manual.2. Aluminum Alloy Wheel Ring: Brushless wheel hub DC motor adopts aluminum alloy wheel and is processed by fine technology, which effectively enhances the edge of the wheel ring. It is light, high end and generous, has strong bearing capacity, and is far more comfortable than other types of motor, so as to realize noiseless operation and let you fully enjoy the fun of riding.3. Manufacturing Material: The controller housing is made of high quality metal with designed to the internal circuitry from thermal overload due to good heat dissipation. LCD meter adopts high quality ABS material, light, rain proof, sturdy and durable.4. Multifunction LCD‑S866 Meter: LCD‑S866 display meter has a variety of functions, LCD backlight display, can clearly display the status and data. When riding a bike, the product will display many useful data on your bike, such as power display, speed display, power indicator, fault indication, total mileage, single mileage, current speed, average speed, maximum speed, gear display, etc.5. Wide Applicability: 48V 1500W rear drive motor wheel kit is suitable for mountain bike lithium modified rear drive flywheel electric bikes, DIY electric bike, electric bikes, elect