This rear-drive motor, which is compatible with the disc brake, has a rated power of 500W, 750W and 1000W, a reduction ratio of 1: 5, providing ideal power for vehicles. Strong and efficient, this motor, working together with a cassette speed change mechanism(the freewheel is also available), greatly enhances riding comfort and is suitable for touring bikes, commuter bikes, and mountain bikes. The standard color is black.