Features: The set includes a 3100KV brushless motor, a 120A ESC, a programming card and heat sink, which is perfectly fit for the 1/8 1/10 1/12 RC car and is designed to provide both quality and performance at an affordable price. Good heat dissipation effect, prolong the ESC's service life. Multiple protection Features: Low voltage cut-off protection for lithium battery, Over-heat protection, Throttle signal loss protection, motor blocked protection. Equipped with electronic switches, compared with traditional mechanical switches, it can avoid problems such as the accidental shutdown of mechanical switches due to impact. High quality PCB plate, good linearity, high current capability. Waterproof, brushless ESC size is 48 * 38 * 34mm. If there are any problems, please contact our store in time. We will give you a satisfactory solution. Specifications: 3650 3100KV Motor: Watts: 900W Max Voltage: