This 6-piece aluminium servo horn kit is a scale replacement and tuning component for the TRAXXAS TRX4 Trail Crawler chassis, model TRX416025L. The set replaces the stock straight steering arm with a machined 25T aluminium horn and includes an adjustable tie rod link that permits fine mechanical adjustment of steering geometry without altering the servo spline or chassis mount points.
Engineering note: the straight arm reduces linkage length and lowers flex at the horn, improving steering fidelity at low crawl speeds. The four-hole pattern allows discrete changes to effective lever arm and centring bias, enabling repeatable setup changes for tyre, vehicle weight and line selection.
Use the hardware from the original listing to install the horn and tie rod to the servo and steering linkage as supplied. The design focuses on precision fit, consistent hole spacing and reliable fastener locations for durable field performance.