Feature:1. 4 pole 12 slot high torque motor designs, 3.175mm / 5mm shaft diameter.2. Highpurity copper winding maximizes efficiency, precision designs for maximum energy conversion.3. Precision balanced rotor, smoothness for best reliability and maximum RPM.4. High rotating rate and good performance, easy to install, convenient and practical.5. An important accessory for RC car, perfectly fit for 1/8 1/10 RC Car.Specification:Condition: 100% Brand NewItem Type: RC Car Brushless MotorModel: 3650Color: BlackFitment: Fit for HSP 1/8 1/10 RC Car3100KVWattage: 900WMaximum Voltage: <16VMaximum Amperage: 56ARated Voltage (RPM/V): 3100KVMaximum Rotating Rate: 50000Diameter: Approx. 36mm / 1.4inLength: Approx. 50mm / 2inShaft Length: Approx. 15mm / 0.6inShaft Diameter: Approx. 3.175mm / 0.1inPlug Type: 4mm Golden Plug3900KVWattage: 900WMaximum Voltage: <13VMaximum Amperage: 69ARated Voltage (RPM/V): 3900KVMaximum Rotating Rate: 50000Diameter: Approx. 36mm / 1.4inLength: Approx. 50mm / 2inShaft Length: Approx. 15mm / 0.6inOuter Shaft Diameter: Approx. 3.175mm / 0.1inInner Shaft Diameter: Approx. 5mm / 0.2inPlug Type: 4mm Golden Plug4300kvWattage: 900WMaximum Voltage: <13VMaximum Amperage: 69ARated Voltage (RPM/V): 4300KVMaximum Rotating Rate: 50000Diameter: Approx. 36mm / 1.4inLength: Approx. 50mm / 2inShaft Length: Approx. 15mm / 0.6inOuter Shaft Diameter: Approx. 3.175mm / 0.1inInner Shaft Diameter: Approx. 5mm / 0.2inPlug Type: 4mm Golden Plug5200KVWattage: 900WMaximum Voltage: <9.6VMaximum Amperage: 94ANumber of Rotor Poles: 4Rated Voltage (RPM/V): 5200KVMaximum Rotating Rate: 50000Length: Approx. 50mm / 2inDiameter: Approx. 36mm / 1.4in with FinsShaft Diameter: Approx. 3.175mm / 0.1inExtension Shaft Length: Approx. 15mm / 0.6inPlug Type: 4mm Golden Plug.Package List:1 x Motor