TRAXXAS TRX4/TRX6 Rear Chassis Crossmember by GPM TRX4015RN  [TRX4015RN]

Rear Chassis Crossmember

The GPM TRX4015RN rear chassis crossmember is an aftermarket aluminium replacement designed for TRAXXAS TRX4 and TRX6 scale trail crawlers. Machined from 7075 aluminum, the piece provides a stiffer mounting point for the rear section of the chassis, reducing flex under heavy articulation without implying any real vehicle application.

Fitment targets are listed below and mounting hardware is included in the package so you can use the part with standard TRX4/TRX6 mounting points. The crossmember acts as a reinforcing component that works with existing frame rails and suspension links to stabilise the rear chassis during slow, technical crawling.

Installation requires basic hand tools and a steady workshop approach; confirm alignment with the stock mounting holes and reuse or replace spacers as needed. In tuning terms, this part helps maintain chassis geometry under load, which can make steering input and weight transfer more predictable when experimenting with tyre choice and suspension settings.

If you need a durable, low-profile rear crossmember for TRX4/TRX6 scale crawling builds, this 7075 aluminum replacement supplies added stiffness and arrives with the fasteners required for assembly.