TRAXXAS TRX4 Trail Crawler Aluminum Rear Gear Box 15 pcs set by GPM TRX4013B  [TRX4013B]

Aluminum rear gear box for TRX4

This is an RC-scale aluminum rear gear box assembly designed for the TRAXXAS TRX4 Trail Crawler platform, supplied as a 15 pcs set and sold without the cover. Machined from 6061-T6 aluminum to replace or upgrade stock components, the upgrade focuses on reducing flex and improving long-term durability in rear differential and suspension mounting areas.

The kit's primary role is to stabilise the rear differential parts, rear axle mount set for suspension links, and the rear C hub mounting points under trail crawling loads. Included fasteners provide a direct fit for the TRX4 rear assembly to ensure the aluminium parts seat correctly and maintain alignment during low-speed technical driving.

For TRX4 owners aiming for a stiffer, more consistent rear end, this GPM aluminium rear gear box set replaces vulnerable plastic mounting points and supplies the necessary screws for direct installation, helping maintain alignment through demanding trail runs.