TAMIYA M03M Motor Heatsink M03M-21/SI by 3Racing  [M03M-21/SI]

Motor cooling accessory for TAMIYA M03M

This M03M-21/SI motor heatsink is an RC accessory made to sit on motors used in the TAMIYA M03M layout. It is intended to draw heat away from the motor can during extended sessions and heavier runs to keep temperatures more consistent.

Fitment concentrates on the M03M chassis geometry, with the heatsink positioned close to the motor can while avoiding interference with the spur and pinion gear engagement. Always check visual clearance on your specific motor and mount before bolting the part in place, and route wires so they do not touch the cooling fins.

Installation follows common compact touring car practice: remove the motor from its mount, slide the heatsink onto the can where applicable, and secure using the existing motor clamp or mounting method. After refitting, verify gear mesh and perform short tests to confirm there is no contact with nearby components.

Thermal effect: fitting a heatsink reduces sustained operating temperature, helping to limit thermal stress on windings and magnets so the motor holds steady over longer runs. For best results combine cooling with suitable gearing, ESC settings, and regular checks of bearings and airflow.