TRAXXAS TRX4 TRAIL CRAWLER Steel 13T Pinion Gear by GPM TRX4013T  [TRX4013T]

TRX4 13T Steel Pinion Gear

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

Designed to replace or upgrade the stock pinion, the 13T, 32-pitch gear provides a direct way to alter final drive ratio for crawling or low-speed torque needs without changing the spur gear. Key measured features supplied by the manufacturer are a middle hole diameter of 3.175mm, a tooth distance of 0.8mm, and a 13-tooth count which matches 32-pitch spur gears used in TRX4 setups. Use this set when you need a durable steel option for repetitive low-speed crawling where contact durability is more important than lightweight gearing.

Installation notes: slide the pinion onto the motor shaft, align meshing with the corresponding spur gear, and secure using the supplied 3×3 screw shaft. Check gear mesh and backlash before final runs, and confirm the motor pinion and spur gear share the 32-pitch specification to avoid accelerated wear.