The large torque of 48V brushless motor, which can reach 4500 RPM, ensures high working efficiency. This electric motor kit has the natural air cooling fuction and pruduces low noise for improving your using experience. The brushless motor has aluminum body and all copper coil with a satisfying heat resistance effec, ensuring the working effect. The brushless motor controller kit adopts quality aluminum alloy and plastic for a long service life. Suitable for DIY kart, scooter, electric bike, mopeds, electric off road vehicle, tricycle, DIY engine system, etc. Item Type: Brushless Motor Kit Material: Aluminum Alloy + Plastic Weight: 5700g/201.0oz Product Size: Approx. Controller Case Size: 17.8×8.5×4.5cm/7.0×3.3×1.8in Controller current: 34A Motor Rated Speed: 4500rpm/min Rated Voltage: 48V Rated Power: 2000W. After all the necessary parts connected, then connect to power supply. 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.