This RC-scale 23T aluminium servo horn is made for TRX4 steering setups and carries part number TRX4023TA/3H. It replaces the factory plastic horn to give a firmer connection between the servo output and steering linkages while using an internal spring to reduce shock loading on the servo gears.
Forged from 6061 T6 aluminium with a straight-arm form, the design keeps mass low and raises resistance to bending at the output arm. The internal spring cushions hard impacts that would otherwise be transmitted into the servo, and multiple mounting holes let you tune tie rod geometry and throw.
Installation note: the internal spring makes the horn thicker than slim alloy arms. On TRX-4 models fitted in the stock servo location, reverse the support tie rod angle to clear the higher profile; this adjustment does not change the front reverse steering gear position.
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