Feature:1. Manufacturing Material: Made of high quality aluminum, copper and ABS material, it is strong and durable, which undoubtedly extends its service life.2. Applicability: Suitable for DIY electric bicycle, make your ordinary bicycles into electric bicycles.3. Brushless Hub Motor Design: Equipped with brushless hub motor, it can well realize noiseless operation, so that you can fully enjoy the fun of riding.4. Cycling Fun Improved: High strength and efficiency, greatly enhance the fun of riding, suitable for cyclists who like a challenge.5. Alternative Spoke Sizes: Five spoke sizes are available for easy operation and display meters display data.How to Use:The interface on the controller can be connected to the socket of the accessory to realize its function. For details, please refer to the wiring diagram and manual.Specification:Item Type: Electric Bike Motor Conversion KitConnection Mode: Waterproof ConnectorMaterial: Aluminum + Copper + ABSMotor:Speed: 25-28km/hSpeed: 207-270RpmTorsional Moment: 29-31.2Opening Size: Approx.100mm / 3.9inMatching Controller: 15ARims: P19DMoment Arm: M14Disc Brake Plate: Approx.160mm / 6.3inMotor Structure: Gear MotorMagnetic Steel Height: 22HNumber Of Magnetic Poles: 20Brake Type: V Brake, Disc Brake UniversalController:Morse Tube: 6 TubesMaximum Current: 15±1ARated Voltage: DC36V, 48VSpeed Setting: 1-4.2VRated Current: 7ABrake Input: Low LevelLow Voltage Protection: DC30/40±0.5VPackage List:1 x Motor 1 x Controller 1 x Thumb Throttle1 x Speed Assist Sen