RC Car Motor Heatsink 550 540 Motor Cooling Fan with Thermal Sensor CNC Aluminum Alloy Heatsink for Traxxas Hsp Redcat Rc4wd Tamiya Axial SCX10 D90 HPI Car

Features:
This RC motor heat sink is specially designed for 540 550motors of RC model car.
The RC heat sink with thermal sensor is equipped with 5-10V cooling fan to protect your motor.
The thermal sensor will accurately detect risingtemperature, when the motor is up to 40℃, the cooling fan will automatically turn on to cool the motor.
The cooling fan can be powered up from the receiver,convenient and easy to use.
With high quality material and exquisite workmanship, theheatsink is durable for long term use.