Feature:1. Made of high-quality components to achieve reliable power, which suits for 1/10 scale RC car.2. High purity copper windings and high-power output raising efficiency and recision engineered for maximum energy conversion.3. 100% Waterproof characteristic exists in all parts of this set, which allows it eminently practical, strong and durable.4. High torque servo provides accurate movement.5. The ESC with built-in 5.8V / 3A BEC features fast response to throttle input and accurate throttle linearity.6. Multiple conservation functions including low voltage cut-off conservation for lithium or nickel battery, over-heat conservation, throttle signal loss conservation and motor blocked conservation.7. An economical combo comes with a 3650 4300kv motor, a 60A ESC and a 20kg servo is more convenient for DIY.Specification:Motor Specifications:Watts: 900WMaximum voltage: <12VMaximum Amps: 75AKV(RPM/Volt): 4300KVMaximum RPM: 50000Diameter: 36mmLength: 50mmShaft length: 15mmShaft diameter: 3.175mmPlug type: 4mm golden banana plugESC Specifications:Item name: water resistant ESCContinue current: 60ABurst current: 320ABattery: 2sLi-Po / 4-9S Ni-Mh Ni-CdBEC output: 5.8V / 3APower supply plugs: T plug maleMotor plugs: 4mm banana plug femaleDimension: 50 * 35 * 34mm / 2.0 * 1.4 * 1.3in (without cables)Servo Specifications: 20kg servo black/red shipped randomlyBearing: 2BBDead band: 1s defaultMechanical Angle: 120 Water Resistant: YesOperating Voltage: DC6.0~7.4VWorking frequency: 1500s/330hzOperating Speed (6.0V): 0.23sec/60 degrees Operating Speed (7.4V): 0.20sec/60 degreesStall Torsion (6.0V): 20kg.cm (239.05oz/in)Stall Torsion (7.4V): 22kg.cm (294.75oz/in)Item Size: 40 * 39 * 20mm Weight: 76g Connector Wire Length: JR300 mm (12.6in).Package List:1 x 3650 4300KV Motor1 x Water Resistant 60A Brushless ESC1 x 20kg Servo1 x 25T Adjustable Metal Servo ArmNote:The color of the motor wire head is shipped randomlyThere could be a few deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding.