This aftermarket aluminium servo horn and steering link kit is specified for TRAXXAS TRX4 Trail Crawler builds and carries the model number TRX416025. The 8 piece set replaces factory plastic components to reduce flex and deliver a more consistent steering response in straight steering arm configurations.
The steering link uses a counter-clockwise threaded tie rod to permit length adjustments without rotating ball end seating, making incremental toe and steering bias changes straightforward. The midpoint between ball ends measures 77.5mm, which is a useful setup datum when aligning geometry or swapping components.
Contents and durability notes: the kit includes stainless steel mounting screws and a lock nut, while the principal parts are aluminium to reduce wear compared with plastic originals. The design targets scale trail crawling where a firmer steering feel and repeatable feedback are required.
Installation and tuning procedure: replace the plastic horn with the aluminium unit using the supplied stainless hardware, verify servo spline alignment before final torque, and adjust length using the CCW tie rod while testing steering centring and travel. This direct-fit upgrade addresses plastic arm weakness and supports more predictable low-speed control for technical crawling.