Feature:1. Using high quality aluminum alloy and plastic material, sturdy, durable and long service life.2. Brushless DC motor, aluminum body, full copper coil, heat resistant, natural air cooling, low noise.3. Suitable for scooter, electric bike, mopeds, mini bike, electric off road vehicle, tricycle, DIY engine system.4. Reasonable design, easy to install and disassemble, can replace old or damaged ones, convenient and practical.5. 48V brushless motor has a large and can attain an ultra fast speed of 4500 rpm, ensuring high work efficiency.Specification:Item Type: 48V 2000W Brushless High Speed Motor KitMaterial: Aluminum Alloy + PlasticWeight: Approx.5700g/201.1ozController Current: 34ARated Voltage: 48VRated Power: 2000WMotor Rated Speed: 4500rpm/minController Box Size: Approx. 17.8x8.5x4.5cm/7.0x3.3x1.8in Package List:1 x Motor1 x Controller1 x Pair of Handlebar 1 x Electric Door Lock2 x Key1 x ManualNote:After all the accessories that need to be connected are connected, finally connect the power supply and turn on the power.