1Efficient Heat Dissipation: Equipped with a high speed motor heat sink to provide strong heat dissipation, allowing the car to run for a longer time. 2Good Water Resistance: Motor heat sink set is suitable for competitions under various conditions. It has good waterproof and can adapt to a variety of harsh environments. 3Professional Design: 3650 brushless motor adopts 4 poles 12 slots high torsion motor design to improve the performance of remote control car. 4Excellent Material: Brushless motor is made of aluminum material, CNC processed, and the aluminum motor housing ensures good heat dissipation. 5Wide Application: 3100KV brushless motors sets are universal, suitable for 2S 1:10 remote control cars, for 3S remote control racing cars. Item Type: Brushless Motor Motor Parameters: Material: Aluminum Alloy,Copper Color: Red,Black KV Value: 3100KV Motor Size: Diameter: Approx. 36mm / 1.4in Length:Approx. 50mm / 2.0in(Excluding Shaft Length) Shaft Length: Approx. 15mm / 0.6in Shaft Diameter: Approx. 3.175mm / 0.13in Maximum Speed: 60000 Maximum Voltage: 8.4V Maximum Current: 100A Connector: 4.0mm Golden Banana Head ESC Parameters: Shell Material: Plastic Colour: Black Continuous Current: 60A Peak Current: 320A Applicable Voltage: 7-15V (2-4S Lipo) BEC Output: 6V / 5A Heat Sink Parameters: Material: Aluminum Alloy,Plastic Color: Red Working Voltage: 6-8V Fan Size: Approx. 40mm / 1.6in Approx. 10mm / 0.4in Application: For 1/10RC Remote Control Car 1 xBrushless Motor 1 x ESC 1 x User Manual 1 x Motor Heat Sink