Features: 1. 36V 250W/48V 1000W Brushless toothed motor specification, strong and powerful. 2. Come with powerful controller guarantee big current supply. 3. Suitable for both V brake and Disc brake. 4. The maximum speed of the motor will be 30km/h.(36V 250W） The maximum speed of the motor will be 43km/h.(48V 1000W） 5. The open size of the front fork is 100mm（Front Wheel）/The open size of the rear fork is 135mm（Rear Wheel） 6. Thumb Throttle 7. The size of the rim is 20"（Suitable for 20 inch bike）. 8. Crank speed sensor for pedal assist. Package List: 1 * Motor 1 * Controller 1 * Assist 1 * Electronic power brake 1 * Thumb Throttle 1 * LED Display 1 * Waterproof Wire 1*Controller carrying case.
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