This aluminium servo horn is a scale replacement intended for TRAXXAS TRX4 Trail Crawler steering systems. It fits a 25T spline and its straight-arm construction reduces flex compared with factory plastic arms, which benefits control during slow-speed crawling and repeated steering actions.
Design purpose: the horn links the servo output to the tie rod, while the four selectable holes permit small changes to tie-rod length and steering ratio without having to swap arms. This adjustability aids in fine tuning steering response and centring on scale rigs.
Fitment guidance: ensure spline alignment, secure the horn with the supplied screws and confirm neutral before finishing torque. For a secure metal-to-metal join consider thread-lock on alloy screw points and check for any binding at full-lock after installation.
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