Description: Professional manufacturing, stable performance and high reliability. Thickened copper strips for higher inductance accuracy, smoother motor start and a more comfortable ride. Plus, it gives you great hill-climbing power, low motor running noise and eliminates tire noise. Features: The wire and interface are durable to ensure a low failure rate after long-term use. The controller shell is made of aluminum alloy with a groove design, which has good heat dissipation characteristics, can protect the internal circuit, and avoid thermal overload.