TRAXXAS TRX-4 Chassis Crossmember (Aluminum, Gun Metal) JR-TRX401-GU by Jazrider  [JR-TRX401-GU]

Replacement centre brace for TRX-4 builds

The JR-TRX401-GU is an aluminum chassis crossmember engineered for TRX-4 platforms and supplied in a gun metal finish. It takes the place of the factory centre member to create a firmer structural join between the rails without altering the model's scale lines.

Choosing aluminum and this finish gives a blend of longevity and a close visual match for common scale mods, while retaining compatibility with the stock mounting footprint and weight expectations. The component is meant to be a tuning piece that changes how chassis and suspension share loads on trails.

Installation guidance: it mounts to the existing TRX-4 chassis holes and uses the standard bolt pattern. Simple hand tools are all that are required and it is recommended to tighten fasteners evenly to prevent chassis preload.

Tuning note: replacing the standard crossmember with a stiffer unit will reduce flex and can produce crisper turn-in and steadier feedback for suspension setup. After fitting, make small adjustments to shock length or spring rate to balance articulation and traction.