This JR-TRX412-GU front knuckle arms set is an RC-scale replacement intended for Traxxas TRX-4 chassis models. Forged from aluminum with a gun metal finish, the knuckles are intended to serve as direct-style front steering arms on TRX-4 scale and trail crawlers.
The component is aimed at enhancing chassis robustness and preserving steering alignment during technical crawling. Swapping out the plastic originals provides a firmer mounting surface for hubs and steering links, which helps maintain consistent steering under load.
Fitment advice: check the TRX-4 steering spindle interface and ensure adequate clearance to suspension parts and axle links prior to final tightening. Examine thread engagement, and validate smooth lock-to-lock steering travel post-install.
Suitable as a direct replacement or upgrade for dedicated scale trail and rock crawling TRX-4 rigs where a stronger steering mount is desired; always confirm fitment and steering clearance during installation.
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