Aluminum Alloy Rims: The rear drive DC hub spoke motor is made of aluminum alloy rims, which have been carefully processed to effectively enhance the rim edges, making it light and high end. Noiseless Operation: With strong carrying capacity and comfort, bike rear drive motor is far more comfortable than other types of motors, realizing noiseless operation, allowing you to fully enjoy the fun of riding. Super Power: The modified rear hub motor has high power, maximum speed up to 65km/h, fast speed, meet the fun of cycling enthusiasts. Applications: 48V 2000W rear drive motor is suitable for DIY electric bikes, electric vehicle, electric scooter, folding car, etc; Easy to maintain. High Efficiency: The electric bike refitted motor with has high efficiency can greatly improves the riding fun, and is suitable for cyclists who like challenges. Item Type: Electric Bike Rear Hub Motor Material: Aluminum, alloy, metal Gross Weight: 7700g / 271.6oz Type: Rear drive flying DC hub spoke motor Rated Voltage: 48V Rated Power: 2000W Speed: About 55-65KM/H Speed: 464-537 RMP Torque N. M: 91-94.6 N. M Opening Size (mm): 135-145mm / 5.3-5.7in Matching Controller Current: 50A Wheels: P25D Moment Arm: M14 Applicable Brake Disc: 160mm / 6.3in Brake Type: V Brake and Disc Brake Universal Location: Rear wheel Motor Structure: DC Motor Magnet Height: 40H Number of Magnet Poles: 46. 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.