X-Maxx Motor fan. These fans mount to the stock X-Maxx Heatsink and run off a running packs 4s balance tap. Install on stock X-maxx is literally 30 seconds at most. Plug and Play all day cool. Available in Red, Blue, Green, and Black. These fans also work on the larger 1/5 56 and 58mm size motors folks upgrade to by "stretching" the stock heatsink to fit the larger motors.
Come with all mounting hardware simple two screw 30 second installation.