TRAXXAS CRANIAC Monster Truck Aluminium Spur Gear Adapter + 58T & 13T Steel Gears by GPM CRA155813T  [CRA155813T]

Aluminium spur adapter and steel gears

This aftermarket set replaces the stock spur interface on TRAXXAS CRANIAC Monster Truck drivetrains with an aluminium spur gear adapter paired with a 58T steel spur and a 13T steel pinion, supplied as a single set. The components are intended for 1:10 scale RC use only and are designed to interface with the existing gearbox and motor pinion without modifying the chassis layout.

Installation is straightforward for hobbyists familiar with basic drivetrain disassembly: remove the existing spur assembly from the gearbox, fit the aluminium adapter to the spur shaft according to its mounting faces, install the 58T spur onto the adapter and secure the 13T pinion to the motor shaft while checking mesh. Fine-tune the mesh with shims or by adjusting motor mount position to avoid binding and premature wear.

Functionally this kit serves two roles: provide a rigid aluminium mounting interface that resists deformation under load, and supply hardened steel gears for improved wear resistance compared to softer stock gears. When adjusting gear ratios, remember that moving from the stock tooth counts will affect acceleration and top speed, so test runs and temperature checks are recommended after installation.

If you need a stiffer spur mounting and longer-lasting gear teeth for CRANIAC Monster Truck drivetrains, this GPM set provides a practical upgrade path; verify gear mesh and drivetrain temperatures after the first runs to confirm correct installation.