The MR33 TurboFlow fan duct (made by BOOM RC) channels the airflow from a 40mm square cooling fan straight onto your motor for more effective cooling.

It's 3D printed from heat-resistant filament and weighs only around 2.7g. Ideal for hot conditions and big, fast tracks, as well as tight tracks with lots of hard acceleration.

Installation: screw your fan to the duct, then fix the assembly to the chassis with double-sided tape, leaving roughly a 2mm gap to the motor. Handle with care when removing, as the duct can break if forced.

• Suits 40x40mm square fans
• Weight: approx. 2.7g
• Contents: 1 fan duct
• Required (not included): 2x M3 x 10mm pan head screws, double-sided tape