GPM MG218T/0.5M 40Cr Steel 18T Motor Gear (Module 0.5mm, Motor Tooth Diameter 2.2mm)  [MG218T/0.5M]

Motor pinion for small RC motors

This GPM MG218T/0.5M motor pinion is an RC-scale replacement part made from 40Cr steel with a hardened black finish for improved wear resistance and consistent transmission. The gear has 18 teeth at a 0.5mm module and a motor tooth diameter of 2.2mm, matching common small motor specifications.

Fitment and securing are straightforward: the pinion features a round motor bore and is retained using two 3x3 set screws. Before installation, verify the motor shaft diameter, module, and tooth count to confirm compatibility; only motors matching these parameters should be used.

In tuning applications this pinion serves as a direct swap for like-for-like replacements and as a stable option when you need a hardened-steel gear for improved longevity under regular driving and tuning adjustments. Installation requires basic tools and care to ensure the set screws are tightened evenly to avoid misalignment.