TRAXXAS TRX4 Steel 13T Pinion Upgrade - TRX4013T by GPM  [TRX4013T]

TRX4 13T Hardened Pinion for Trail Crawling

This aftermarket 2pcs pinion gear set is made for use on TRAXXAS TRX4 Trail Crawler scale models as an RC accessory component. Each gear is machined from hardened steel #45 to resist wear under load, and the set includes a single 3x3 screw shaft for fastening to the motor shaft.

Designed to replace or upgrade the stock pinion, the 13T, 32-pitch gear gives a simple way to change final drive ratio for slow-speed crawling or improved torque without swapping the spur gear. Key measured details supplied by the manufacturer are a middle hole diameter of 3.175mm, a tooth distance of 0.8mm, and a 13-tooth count that mates with standard 32-pitch spur gears used in TRX4 builds. Choose this steel option when contact durability and wear resistance matter more than saving weight.

Installation notes: slide the pinion onto the motor shaft, align the mesh with the matching spur gear, and secure using the supplied 3x3 screw shaft. Adjust gear mesh and backlash before running, and confirm both pinion and spur are 32-pitch to avoid premature wear.