Tekin's PRO4 HD Motor raises the bar in offroad power. The PRO4 HD's longer 550 can and 4-pole design provide performance gains across the board and off the charts when compared to standard 1:10th scale motors. The PRO4 HD has the torque and power to level the competition. Designed with kV options for use with 2S, 3S and 4S power systems, 1:10th 4WD Short Course has never had this kind of power! Combine the Pro4 HD with an RX8 GEN2 ESC in your 4WD Short Course and hold on!Features:4 Pole 12 Slot Hi-torque Motor DesignHD Long Can Provides More Power and TorqueCNC Machined 6061 T6 Billet Aluminum Heatsink Can4WD Short Course Specific5mm Output ShaftNeodymium Sintered MagnetsRebuildable DesignHigh Purity Copper Windings Maximizes EfficiencyPrecision Engineered for Maximum Energy ConversionDual-Plug Sensor Wire Harness for use with all sensored and sensorless systemsHigh RPM ABEC5 Oversized BearingsSpecifications:KV: 4300Design: 4 Pole / 12 SlotInput Voltage: 1-2S LiPo/LiHV / 4.2-8.7VWeight: 221g / 7.8ozShaft Dimensions: 5mm (.196in) x 15.3mmMotor Diameter: 35.85mm / 1.40inMotor Length: 62.5mm / 2.50inMAX RPM: 65,000MAX Operating Temperature: 180F / 82CBearing Dimensions: Front: 5 x 14 x 5mm / Rear: 5 x 11 x 5mmRotor Size: 18.5mmRebuildable: YES