Item Type: Electric Bike Rear Hub MotorMaterial: Aluminum, alloy, metalGross Weight: 7700g / 271.6ozType: Rear drive flying DC hub spoke motorRated Voltage: 48VRated Power: 2000WSpeed: About 55-65KM/HSpeed: 464-537 RMPTorque (N.M): 91-94.6 N.MOpening Size (mm): 135-145mm / 5.3-5.7inMatching Controller Current: 50AWheels: P25DMoment Arm: M14Applicable Brake Disc: 160mm / 6.3inBrake Type: V Brake and Disc Brake UniversalLocation: Rear wheelMotor Structure: DC MotorMagnet Height: 40HNumber of Magnet Poles: 46 1Aluminum 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. 2Noiseless 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. 3Super Power: The modified rear hub motor has high power, maximum speed up to 65km/h, fast speed, meet the fun of cycling enthusiasts. 4Applications: 48V 2000W rear drive motor is suitable for DIY electric bikes, electric vehicle, electric scooter, folding car, etc; Easy to maintain. 5High Efficiency: The electric bike refitted motor with has high efficiency can greatly improves the riding fun, and is suitable for cyclists who like challenges.