LEGO Medium Stone Gray Medium Power Functions Motor (16512 / 58120)

This motor is the second fastest PF motor, being beaten out by the Energy Motor, which has an unloaded RPM of 800, while the Medium PF motor has an unloaded RPM of about 380. It has the second lowest torque, being about 40ncm. . LEGO Medium Stone Gray Medium Power Functions Motor has been used in at least 39 LEGO sets over the past 17 years, since it was first used in 2007. You can also find this part in at least 6 other colours. It has the design IDs 16512, 58120, 89966 which can usually be found molded into the bottom of the part.