This JR-TRX412-GU front knuckle arms set is an RC-scale replacement part made for Traxxas TRX-4 chassis use. Machined from aluminum with a gun metal finish, the components function as direct-fit knuckle arms for the front steering assembly on TRX-4 scale and trail crawlers.
The design concentrates on improving chassis durability and preserving steering geometry under crawling loads. In place of stock plastic knuckles, these aluminum arms provide a rigid mounting surface for steering linkages and hub assemblies to help maintain alignment during low-speed technical driving.
Installation considerations: verify fitment to the TRX-4 steering spindle and confirm clearance against suspension components and axle links before final tightening. Inspect thread engagement and any mating hardware for wear, and confirm smooth steering travel through full lock-to-lock movement after installation.
Use as a replacement or upgrade for scale trail and rock crawling setups on TRX-4 vehicles where a firmer steering mount is preferred, while confirming fitment and steering clearance during installation.
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