Upgrade your riding experience with our 36V 750W Electric Bike Rear Wheel Conversion Motor Kit. Designed to fit 24" bicycles this powerful brushless motor can reach a maximum speed of 28mph, making your commute faster and more efficient. With a pedal-assist system, you can ride more comfortably with less effort. High Quality: Electric bicycle rear wheel conversion kit with brushless & gearless hub motor fits for 24" bike Dual mode controller makes motor work under Hall effect and non-Hall effect for extending bike life Pedal assist system for sensing pedal cadence and allowing you to ride electric bike comfortably Aluminum alloy frame for durability and stability, can support a heavy weight up to 220 Lbs Brake levers cut off the power and brake when riding; CE certificated for quality & safety assurance Product Details: Overall Dimension(Dia.xW): 20 1/2" x 8 7/16" Compatible Tire Size: 24" x 2 3/8" to 3" Rim Diameter: 20 1/2" Hub Length: 7 7/8" Rear Dropout Spacing: 5 5/16" Motor Diameter: 7 7/8" Spokes Length: 6 3/8" Spoke Screw Type: 12G Controller Power: 750W Controller Voltage: 36V Motor Speed: 500 RPM Also In The Box: 1x Motor Wheel 1x Controller 2x Brakes 2x Handle Bars 1x Thumb Throttle 1x PAS Sensor 1 Set of Flywheel 1 Set of Torque Arm 10x Wire Ties 1x Spoke Adjuster 2x Winding Pipes Notice: Battery, charger and tire are not included, please prepare them before using. The electric wheel is only applicable to conventional bicycles, not for tricycles, tractors, etc. Please go to automobile repair shops with standard business license for modification.