Reedy have released this motor cooling fan assembly to aid the reduction of motor temperatures, which is an easy way to increase speeds and lower lap times. Reduced temperatures result in increased power output, more consistence performance, and longer motor life. This cooling fan assembly features two pre-wired fans that can be strategically positioned so that motors and/or other electronics are treated to a constant stream of cool fresh air. A pre-installed receiver plug fits conveniently into the third channel receiver socket.

http://redrc.net
http://www.rc10.com/reedy/new/motor_accessories.htm