?GoolRC 550 4300KV 4 Poles Sensorless Brushless Motor for 1/10 4WD Short Course Trucks<br> <br> Features:<br> 4 Pole 12 Slot Hi-torque Motor Design <br> CNC Machined 6061 T6 Billet Aluminum Heatsink Can <br> High Purity Copper Windings Maximizes Efficiency <br> High RPM Oversized Bearings <br> Precision balanced rotor£¬smoothness for best reliability and maximum RPM <br> Removable/Replaceable Rotor <br> Precision Engineered for Maximum Energy Conversion<br> <br> Specifications:<br> Rotor Poles: 4<br> Product: 550/3T<br> KV(RPM/Volt): 4300<br> Max voltage: 12V<br> Max amps: 100A<br> Max power(W): 1200W<br> Item weight: 230g<br> Item size: 56 * 36mm<br> Idle current: 3.7A<br> Max RPM: 50K<br> Shaft: 3.175mm<br> Length of extend shaft: 17mm<br> Connector: 4mm banana plug<br> <br> <br> <br> Package Information:<br> Package size: 9.5 * 8 * 6.3cm / 3.8 * 3.2 * 2.5in<br> Package weight: 260g / 9.2oz<br> White box package<br> <br> Package List:<br> 1 * 550 4300KV sensorless brushless motor<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>