This aluminium servo horn is an RC-scale replacement intended for TRAXXAS TRX4 Trail Crawler steering assemblies. With a 25T spline and straight-arm layout it increases stiffness versus stock plastic arms, which helps under repeated steering loads and low-speed torque conditions.
Mechanical function: it transmits servo output to the tie rod and the four selectable holes let you tweak steering ratio and tie-rod length in fine increments without needing alternative arms. That adjustability is useful when dialing in steering behaviour and centring on crawlers.
Installation advice: line up the spline teeth carefully, secure the horn using the supplied fasteners and confirm neutral before fully tightening. For metal-to-metal screw locations consider a small amount of thread-lock and recheck full-lock travel after fitting.
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