See: Exotek

Exotek have introduced an aluminum clamp-on fan mount designed for use with high power 30mm fans for 1/10 buggies and trucks with standard 540 sized 35.8-36mm diameter brushless motors. Machined from aluminum polished and anodized black, blue or orange for that factory look, the included mounting bracket has multi-mount features that allows the fan to be angled or parallel with the motor can.

Lightweight, secure and just what you needed to easily mount a fan in tight spaces. The angled design allows easy mounting of fans in 2wd buggies and trucks with Laydown gearboxes. The mount can also mount the fan at the end bell in cramped 4wd buggies by using camber shims for spacing (not included).