GoolRC 9T 4370KV 4 Poles Sensorless Brushless Motor and Waterproof 60A Sensorless Brushless ESC for 1/10 RC Car Truck Boat

Features: High-torque and high-efficiency. High purity copper windings maximizes efficiency. Precision engineered for maximum energy conversion. Precision balanced rotor, smoothness for best reliability and maximum RPM. Using high-quality materials, so that the ESC has strong resistance to current capacity. Supports a variety of parameter setting mode: ESC key, the ESC program card, 2-in-1 multifunction professional programmers box, PC special program. Professional programmers can take advantage of USB interface box ESC firmware upgrade online (Firmware).