Any electronic component will benefit by operating at a lower temperature. Cooler temperatures result in improved power, efficiency, and reliability.
Specifically for use with XP 1:10 electronic brushless speed controls (like those that come with SC10 and T4.1 RTRs), this new fan option attaches directly to the ESC's heatsink for maximum cooling. The fan comes pre-wired with a connector that plugs directly into the ESC connector. Mounting hardware is included.
Note: The B4.1 body will not fit over an ESC with the fan option installed.