TRAXXAS TRX4 Trail Crawler Aluminum 25T Servo Horn w/ Built-in Spring, 2 Positioning Holes, 5pcs by GPM TRX4025TA/2H  [TRX4025TA/2H]

Aluminum 25T servo horn for TRX4

This is an RC-scale servo horn kit designed for Trail Crawler setups on TRX4-based models. The aluminum 25T spline horn includes a built-in spring intended to absorb shocks to the steering linkage and reduce direct impact on the servo gear. Multiple positioning holes let you shift the tie-rod connection to tune steering throw and mechanical advantage without changing the servo output spline.

The kit contains the metal components needed for a direct replacement or minor upgrade: the aluminum servo horn, two stainless steel 3x12 round head screws, an aluminum collar, and a 3mm metal washer. Hardware is intended for hobby-grade installations on matching spline and shaft sizes; verify fit with your servo before final assembly.

Note on TRX-4 installation: because the assembly includes a compression spring the horn body is thicker than a standard plastic arm. When fitting to TRX-4 models in the stock servo location, reverse the support tie-rod orientation to preserve clearance between the horn and surrounding chassis parts. This change does not affect the position of the front reverse steering gearbox but is required to avoid interference in some stock layouts.