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Samix Traxxas TRX-4 Servo Horn (Black) (25T)

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The Samix Traxxas TRX-4 Servo Horn is a double clamp lock style horn developed specifically for TRX-4 trucks. Precision machined to exacting specifications, this horn matches the TRX-4 geometry perfectly and is a great upgrade. The arm features a unique shape and dual clamp design that will keep the horn locked securely to the servo output. Package includes one 25 tooth servo horn and clamp lock hardware.


  • Machined from high quality aluminum
  • Clamping head for secure mounting in high stress applications
  • Clamp hardware included
  • Available in multiple color options with laser etched samix logo
  • Available in 23T and 25T servo applications

This product was added to our catalog on December 19, 2017

Verified Owner
Monday, Jul 1 2019 (3 weeks ago)
Samix Traxxas TRX-4 Servo Horn (Black) (25T)
Does not work well with the Savox 1283SG
horn touches the servo case and the chassis/brace at full lock
Center is also off half a spline
Tuesday, Oct 2 2018 (10 months ago)
Samix Traxxas TRX-4 Servo Horn (Black) (25T)
Super nice design with the double clamping screws. Excellent quality and fits my Protek Black series 370TBL crawler servo perfectly. Even with 650 oz-in of torque it has no problems...