The original SURPASS 4120 400KV brushless motor is designed to provide both quality and performance at an affordable price. It is built from high quality aluminum alloy which is produced from the latest CNC milling machines, and is designed with high power and rotation speed to provide longer run time for RC airplane fixed-wing.<br><br><br>Features:<br>14 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 ABEC5 oversized bearings       <br>Precision balanced rotor, smoothness for best reliability and maximum RPM       <br>Stator-super thin (0.2mm) laminations          <br>Precision engineered for maximum energy conversion<br><br>Specifications:<br>Brand name: SURPASS<br>Item No.: C4120<br>KV(RPM/Volt): 400KV<br>Watt: 1248W<br>Voltage range: 9-24V<br>Idle current: 1A<br>Motor size: &Oslash;50 * 55mm<br>Staror size: 4120<br>Recommended propeller: 14 * 8 / 15 * 8 / 17 * 9<br>Connector: 4.0mm golden banana connector<br>Weight: 280g<br><br>Package Information:<br>Package size: 9.5 * 8 * 6.5cm / 3.7 * 3.2 * 2.6in<br>Package weight: 361g / 12.7oz<br>Gift box package<br><br>Package List:<br>1 * SURPASS 4120 400KV Motor