TRAXXAS TRX4 Aftermarket 7075 Aluminum 25T Servo Horn TRX4025TC by GPM  [TRX4025TC]

7075 alloy 25T servo arm

This aftermarket servo horn is made for TRAXXAS TRX4 Trail Crawler platforms and is supplied as model TRX4025TC by GPM. Machined from 7075 aluminum with a straight-arm profile, it reduces flex versus stock plastic arms while matching the common 25-tooth servo spline used in scale crawler steering setups.

The part functions as a direct replacement in steering linkages and includes dual mounting holes so you can tweak tie-rod position to change steering throw or gain mechanical advantage during setup. It is intended only for hobby RC vehicles and not for use on real machines.

Fitment is simple: remove the factory horn, confirm you have a 25T spline and correct orientation, fit the aluminum horn to the servo spline, and secure with the supplied screws. Check for clearance and verify steering range before running, then recheck fasteners after initial testing.