Description: 4 Pole 12 Slot Hi-torque Motor Design,CNC Machined 6063 T6 Billet Aluminum Heatsink Can. High Purity Copper Windings Maximizes Efficiency,High RPM Oversized Bearings. Precision balanced rotor, smoothness for best reliability and maximum RPM,Three running modes of the ESC: Fwd/Br, Fwd/Rev/Br and Fwd/Rev, fits for various vehicles (Fwd =Forward, Br=Brake, Rev=Reverse). Great built-in BEC output capacity,The ESC has automatic throttle range calibration, easy to use,Easy to set the ESC parameters with jumpers. Suit for all 1/10 RC Car Buggy Truck Monster and Crawler. Metal:metal Specification: Item type: Brushed Motor and Brushed ESC Motor Size: 540 Motor Turns: 45T Motor Current: 1.82A Motor Input Votage: 7.4V Motor Diameter: 35mm Motor Length: 55mm Shaft Length: 12mm Shaft Diameter: 3.175mm ESC Constant current: 60A Burst current: 80A (10S) BEC: 5V / 2A Power supply: 2S 7.4V lipo or 7.2V NIMH battery Suit for 1/10 RC Buggy Truck Monster and Crawler Item Size: 78 x 70 x 35mm Size Chart: Package size: 10.2 x 8 x 6cm / 4 x 3.2 x 2.4in. Color:Black Package Includes: 1 piece 540 45T Brushed Motor 1 piece 60A Waterproof Brushed ESC