Description: 4 pole 12 slot high-torque motor design High purity copper windings maximizes efficiency,Precision engineered for maximum energy conversion. Precision balanced rotor,smoothness for best reliability and maximum RPM. Mutiple protection features: Low voltage cut-off protection, over-heat protection, throttle signal loss protection,Bulit-in 5.8V/3A BEC Suit for 1/10 1/12 RC Car Truck. Specification: Motor Specifications: Size: 540 Watts: 820W Max voltage: