Hot Racing Traxxas Sledge 40mm Twister Motor Cooling Fan with Plug. Designed to keep your motor temps in check the 40mm Twister fan provides incredible airflow and cooling performance. The included anodized aluminum mounts make installation a bolt on process while the wiring harness just plugs right in to power the fan. Give your Sledge the cooling it deserves with this 40mm Twister Motor Cooling Fan kit from Hot Racing. Package includes one 40mm fan, two aluminum mounts, one wiring harness and mounting hardware.