Features1Quality Material: The aluminum alloy wheel ring is selected and processed by fine technology to effectively enhance the edge of the wheel ring, making it light with strong bearing capacity, and much more comfortable than other types of motors. 2Function: 3 built in modes can be easily switched with meters and pedals to meet the needs of different riding scenarios. Ride mode: Foot power control speed exercise body begins from riding. Boost mode: Provides 0%50% output, intelligent power and trampling force. Pure electric mode: Power can be turned on without stepping on the knob. 3Suitable Situation: Suitable for modification, easy to maintain, electric bicycle mountain bike modification conversion motor, high efficiency, greatly improve the fun of riding, suitable for cyclists like challenges. 4Waterproof: IP54 waterproof can protect components and wiring; Strong and efficient, this motor greatly enhances riding comfort and is suitable electric bicycles. 5Application: DIY electric bicycleS, electrocar, electric scooter, folding vehicle, wheelchair, light electric car, etc.SpecificationItem Type: Bike Rear Wheel MotorMaterial: Stainless Steel + Aluminum AlloyApplication: For DIY Electric Bicycles, Electric Scooters, Folding BikesProduct Size: Rear Fork Size: Approx.135-142mm/5.3-5.6inWeight: Approx.3275g/7.2lbConnector Type: 9 CoresRated Voltage: 36VRated Power: 250WRated Speed: About 25-28km/hSpeed: 207-270 RPMTorque: 29-31.2N.MBrake Type: Disc BrakePosition: Rear WheelStructure: GearOperating Temperature: -20 Degree-+45 DegreeWaterproof Grade: IP54Fit Wheel Size: 16in/20in/24in/26in/27.5in/28in/29in/700CPackage List1 x Bike Rear Wheel Motor1 x Description Illustration