GoolRC Upgrade Waterproof F540 4370KV Brushless Motor with 45A ESC Combo Set for 110 RC Car Truck

4 pole 12 slot high-torque motor design High purity copper windings maximizes efficiency engineered for maximum energy conversion balanced rotor,smoothness for best reliability and maximum RPM Mutiple protection features: Low voltage cut-off protection, over-heat protection, throttle signal loss protection