This JR-TRX412-GU front knuckle arms set is an aftermarket RC-scale replacement for Traxxas TRX-4 chassis applications. Machined from aluminum and finished in gun metal, the components are built to serve as direct-style knuckle arms in the TRX-4 front steering assembly for scale trail and rock crawling vehicles.
The upgrade is aimed at increasing steering mount stiffness and improving response under load, which can help maintain alignment and reduce flex while crawling. By swapping out the stock plastic knuckles, the aluminum arms give a firmer connection point for steering linkages and hubs.
Installation reminders: confirm TRX-4 spindle compatibility and check for any interference with suspension or axle links before final assembly. Inspect fasteners and confirm smooth full-range steering movement after installation.
Use these knuckles as an upgrade to tighten steering feel and increase durability on TRX-4 crawling rigs; always confirm fitment and steering clearance during setup.
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