It is a light tuning motor of the 540 base motor
Lightly tunes the 540 motor included with the kit. You can expect to speed up the machine. Please make the bearing part full bearing.
Basic specifications (unchanged)
Operating voltage: 6V-8.4V, torque at the highest efficiency: 350g-cm (at 7.2V), rotation number at the highest efficiency: 18300rpm (at 7.2V) 23 turns