Specifications: Condition: 100% Brand New Optional Type: rear Motor Motor Specification: 48V 1000W Speed: 50KM/H rear fork open size: Approx. 135mm Brake: V brake/disc brake Controller: 48V 130A Assist: 5 magnetic point assist sensor Brake Lever: Power cut-off brake lever Throttle: Thumb Throttle Display: SW-810LED Display Wiring Mode: Waterproof wire for outgoing motor, common wiring for other Package List: 1 Motor 1 Controller 1 Assist 1 Electronic power brake 1 Thumb Throttle 1 LED Display 1 Waterproof Wire 1Controller carrying case. Note: while connecting the controller to the wires, please make sure that you connect the right colors to the controller. Otherwise, the controller may be broken. About the battery: The power and voltage of the battery. When installing, make sure that the wiring is not reversed. Otherwise, it may damage the product. Note: Not waterproof, please do not drive on rainy days. Specification, strong and powerful. Come with powerful controller guarantee big current supply. Suitable for both V brake and Disc brake. The maximum speed of the motor will be 50km/h. The open size of the rear fork is 135mm. The size of the rim is 20(Suitable for 20 inch bike). Crank speed sensor for pedal assist. Condition: 100% Brand New. Motor Specification: 48V 1000W. Rear fork open size: Approx. Brake: V brake/disc brake. Assist: 5 magnetic point assist sensor. Brake Lever: Power cut-off brake lever. Wiring Mode: Waterproof wire for outgoing motor, common wiring for other. 1 Electronic power brake.