This rc motor heatsink with 5V cooling fan is compatible with 540 550 brushed motor and 3650 3660 3674 brushless motor;
Powered by DC voltage:5V-6V, Just connect receiver spare port to get power, easy and convenient to use;
RC Motor Heatsink keeps your motors cool so that your motor running efficient, it protects your motor from overheat;
RC Electric Motor Heat Sink is made of aluminum alloy and plastic combined, well made and durable, small size and lightweight, convenient for you to install and remove;
If you are not satisfied with our product received, you can contact us for help!