When you run hard or put in several back to back sessions, motor heat accumulates quickly. The 3Racing Extended Motor Heat Sink with Fan is made to sit on 540 motors and deliver steady airflow to control temperatures during extended use.
The design increases surface area so heat moves away from the motor faster. The fan aids airflow through the fin pack, helping to keep temperatures in check during repeat high load periods.
For modelers who expect repeatable performance, this heat sink helps avoid thermal-related power drop. It is a practical upgrade for cars that see sustained full throttle or frequent short runs.
Secure mounting and unobstructed fan airflow are key. Periodic cleaning of the fan and checking for loose fasteners will keep cooling consistent and help protect the motor from overheating damage.
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