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: 900W Maximum voltage: <12V Maximum Amps: 75A KV(RPM/Volt): 4300KV Maximum RPM: 50000 Diameter: 36mm Length: 50mm Shaft length: 15mm Shaft diameter: 3.175mm Plug type: 4mm golden banana plug ESC Specifications: Item name: water resistant ESC Continue current: 60A Burst current: 320A Battery: 2sLi-Po / 4-9S Ni-Mh Ni-Cd BEC output: 5.8V / 3A Power supply plugs: T plug male Motor plugs: 4mm banana plug female Dimension: 50 * 35 * 34mm / 2.0 * 1.4 * 1.3in (without cables) Servo Specifications: 20kg servo black/red shipped randomly Bearing: 2BB Dead band: 1μs default Mechanical Angle: 120° Water Resistant: Yes Operating Voltage: DC6.0~7.4V Working frequency: 1500μs/330hz Operating Speed (6.0V): 0.23sec/60 degrees Operating Speed (7.4V): 0.20sec/60 degrees Stall 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 Motor 1 x Water Resistant 60A Brushless ESC 1 x 20kg Servo 1 x 25T Adjustable Metal Servo Arm Note: 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.