Upgrade Pinion for Small Motors - MG218T/0.5M 18T (0.5mm Module) by GPM  [MG218T/0.5M]

Durable micro motor pinion

The MG218T/0.5M pinion is an RC replacement component fabricated from 40Cr steel with a hardened black coating to improve resistance to wear and provide stable gear engagement. It features 18 teeth at a 0.5mm module and a 2.2mm motor tooth diameter to match common small motor specs.

Mounting is direct: the pinion has a round bore and is held in place with two 3x3 set screws. Confirm the motor shaft diameter and module match the pinion before attempting installation to avoid fit issues.

For tuning and everyday driving this hardened-steel pinion is suitable as a like-for-like swap or an upgrade for longer life. Use basic tools and ensure the set screws are tightened evenly to avoid misalignment during use.