This electric motor kit is suitable for DIY bicycles, tricycles, scooters and skateboards. It is easy to use with stable performance, thus has a long service life, a good replacement choice. The controller cover is made of aluminum alloy, which can protect the internal circuit, 4. Accompanying with good heat dissipation, effectively avoiding thermal overload then damage the device. This set including motor, brush controller, 38 link chain, 16 teeth flywheel, electric door lock, key and handle. Condition: 100% Brand New. Color: As Picture Shown. Rated Speed: 2950 RPM. 1 x Brush Controller. 1 x 38 Link Chain. 1 x 16 Teeth Flywheel. 1 x Electric Door Lock. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Instead of leaving negative/neutral feedback or opening a dispute. Our listing price includes the value of goods, packaging cost, and export. Please check with your country’s. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.