GPM Racing 40CR Steel Motor Gear 18T (Module:0.5mm,motor Tooth Diameter:2.2mm) (MG218T/0.5M)

Replacement motor pinion for micro RC drivetrains

The MG218T/0.5M motor pinion is an RC replacement manufactured from 40Cr steel with a hardened black finish to enhance wear resistance and gear consistency. It features 18 teeth at a 0.5mm module and a motor tooth diameter of 2.2mm to suit common small motor setups.

The pinion mounts on a round motor bore and is secured using two 3x3 set screws. Prior to installation check the motor shaft diameter, module and tooth count to ensure a correct match for safe operation.

Used for like-for-like swaps or when upgrading to a tougher gear material, this hardened-steel pinion provides improved longevity under standard driving and tuning conditions. Install with basic tools and tighten the set screws evenly to maintain alignment.

What are the exact fit dimensions for this pinion?

It fits motors compatible with a 0.5mm module 18T pinion and a motor tooth diameter of 2.2mm; always verify shaft diameter and module before fitting.

Any tips for preventing gear misalignment?

Tighten the two 3x3 set screws gradually and check mesh at each step; a small test run will reveal any runout needing correction.

How does the hardened finish affect service life?

The hardened 40Cr finish increases wear resistance and strength versus softer materials, reducing the frequency of replacements under normal RC use. Write Product Review Please sign in your account before you can write any review. Sign In Close

Made to order: GPM Racing parts are shipped to us from GPM's factory, so please allow around 14 days for dispatch.