GoolRC 550 4300KV 4 Poles Sensorless Brushless Motor for 1/10 4WD Short Course Trucks <br><br><strong>Features:</strong> <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><strong>Specifications:</strong> <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><strong>Package Information:</strong> <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><strong>Package List:</strong> <br>1 * 550 4300KV sensorless brushless motor