This JR-TRX401-GU aluminium crossmember is produced for TRX-4 platforms and finished in gun metal to match common scale styling. It replaces the stock centre link to deliver a firmer connection between the chassis rails while preserving the model's scale profile.
The material and finish were selected to resist trail wear and to integrate visually with typical scale accessories, while keeping mass and mounting footprint aligned with stock points. The part functions as a tuning element to alter how loads are transmitted through the chassis and suspension.
Fitment notes: it installs to the existing TRX-4 chassis mount pattern using standard hardware. Basic hand tools are sufficient; use a torque-balanced approach to secure fasteners and avoid introducing unwanted preload.
On the trail: a stiffer centre crossmember will limit flex, which can sharpen handling and provide steadier suspension feedback. Plan for small, incremental tweaks to shocks and springs after installation to retune articulation and traction behaviour.
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