Feature:1. Aluminum Alloy: The RC motor heatsink cover is made of premium aluminum alloy and plastic materials, durable, ensuring safe and efficient work and long service life.2. Dual Cooling Fans: The dual fan has strong heat dissipation capacity. The powerful heat dissipation fan makes the remote control vehicle last longer.3. Easy Installation: The RC motor upgraded part will greatly reduce the heating of the motor, facilitate the installation, disassembly and use.4. Prevent Overheating: The motor heatsink can always keep the motor at the correct temperature to prevent the engine from overheating, so as to effectively complete the work of the engine.5. Fine Workmanship: The RC motor heatsink has high performance and fine workmanship. You can use a cooling fan to protect your motor. It is simple and convenient to use.Specification:Item Type:RC Motor Fan Cooling HeatsinkMaterial: Aluminum alloy and plasticGross Weight: 56g/2.0ozVoltage: 8.4VMaximum Speed: 28000RPMSingle Fan Size: 30.1x30.1mm/1.2x1.2inLength of Extension Cable: 263mm/10.4inApplicable Motor: 540/550 motor aluminum radiator double leaf connectorApplicable to: Brushless motor with diameter of 36mm/1.4inApplicable to: All 1/8 1/10 remote control vehicles.Package List:1 xRC Motor Fan Cooling HeatsinkNote:1. Due to manual measurement, please allow 1 to 3mm error, thank you!2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Motors are not included in the shipment.