32 Pitch Steel Pinion Gear Set 15T-19T for 3.175mm Motor Shaft – Compatible with 1/10 RC Crawlers

This pinion gear set includes five steel motor gears with tooth counts from 15T to 19T, all designed for a 3.175mm motor shaft and 32-pitch (0.8 module) spur gears. Each gear is 11mm tall and made from hardened steel, making them a direct upgrade for 1/10 scale RC crawlers from brands like Traxxas, Arrma, HSP, HPI, AXIAL, Tamiya, and LOSI. The set comes with matching grub screws and a hex key for installation.

What tooth counts are included?

The set contains five individual pinion gears: 15T, 16T, 17T, 18T, and 19T. This range lets you fine-tune your gear ratio for different terrain or motor setups without buying separate gears. Each gear has a 3.175mm bore and 32-pitch teeth, and the 11mm height is standard for most 1/10 brushed and brushless motor shafts.

Compatibility and installation notes

Before installing, confirm that your motor shaft is exactly 3.175mm in diameter (common for 540-size motors). The pinion and spur gear must share the same pitch—32 pitch, also known as 0.8 module. Our gears are labeled 32P but work interchangeably with any 0.8 module spur gear. The set includes a hex key and five grub screws (one per gear) so you have everything needed for a secure fit. Always tighten the screw against the flat spot on the motor shaft to prevent slipping.

A useful detail: 32 pitch and 0.8 module are the same standard—many metric drivetrains use 0.8 module, so these gears fit a broad range of RC vehicles beyond the listed brands. The steel construction is harder than typical brass pinions, reducing wear over time.

Frequently asked questions

Are these gears compatible with my 1/10 Traxxas Slash?

If your Slash uses a 32-pitch spur gear and a 3.175mm motor shaft, yes. This applies to most stock Traxxas 1/10 models. Always check your spur gear pitch before purchasing.

What shaft diameter do they fit?

Only 3.175mm (1/8 inch) shafts. 5mm or 3.2mm shafts will not work.

How many gears are in the set?

Five pinion gears (15T-19T), five grub screws, and one hex key. A total of eleven pieces.

Can I use a 0.8 module spur gear with these pinions?

Yes, 32 pitch and 0.8 module are identical in tooth geometry. Any 0.8 module spur gear is compatible.