GPM Racing #45 Steel Motor Gear 28T (48 Pitch,module: 0.5mm,motor Tooth Diameter: 5mm) (MG528T/0.5M)

45 Steel Pinion - Product Notes

The MG528T/0.5M pinion is a 28-tooth motor gear made for 48-pitch systems with a 0.5mm module and a 5mm motor bore. It is suitable for electric RC drive trains running 48-pitch gearing.

This pinion is suitable for replacing worn parts or for fitting a 28T ratio into an existing 48-pitch setup. The 45-steel build provides a durable contact surface, though correct mesh and alignment remain essential to avoid accelerated wear on mating gears.

Installation advice: check the motor shaft bore is 5mm, position the pinion axially for correct mesh, secure the fastener and test for endplay. After initial running inspect tooth engagement and fastener tightness and make micro-adjustments to mesh as required for smooth operation.

Tuning note: switching to this 28T pinion changes the driven ratio in predictable increments, affecting acceleration and top speed while staying within 48-pitch compatibility and the limits of your motor and ESC.

What are the exact specs of the pinion?

The pinion is 28 teeth, cut for 48-pitch systems, Module 0.5mm, constructed from 45 steel, and accepts a 5mm motor shaft bore.

Any recommended installation steps?

Verify shaft diameter and axial placement, set correct mesh, tighten the pinion fastener, then recheck after a short run. Make small mesh adjustments if you notice binding or noisy engagement. 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.