Overview
Replace the stock plastic servo horn on your Traxxas TRX-4 with the Hot Racing CNC Aluminum 25T Single-Arm Servo Horn. CNC-machined from solid aluminum and finished in a striking blue anodized coating, this direct-replacement servo horn fits the 25-tooth spline on stock TRX-4 servos — delivering the strength and precision the factory plastic horn simply can't match.
A flexy, stripping plastic servo horn compromises every steering input. The aluminum upgrade transmits 100% of your servo's torque to the steering linkage with zero compliance, dramatically improving steering response and consistency under hard cornering loads. A simple, high-impact upgrade for any TRX-4 driver who values precision steering.
Key Features
- CNC-machined aluminum construction
- Blue anodized finish for corrosion resistance and clean looks
- 25-tooth spline (Traxxas stock TRX-4 servos)
- Single-arm design with linkage hole
- Direct replacement for stock plastic servo horn
Performance Benefits
- Sharper, more direct steering response
- Eliminates the flex and stripping common to plastic servo horns
- Long-lasting aluminum durability
- More consistent steering feel under load
- Cleaner visual appearance than plastic stock horn
Usage Notes
Designed for the 25-tooth spline used on Traxxas stock TRX-4 servos. Apply removable thread-locker on the clamp screw during installation. Verify proper steering centering after installation. If you've upgraded to a non-Traxxas steering servo, verify spline count before installation.
Technical Specs
- Material: CNC-machined aluminum
- Finish: Blue anodized
- Spline: 25 tooth
- Style: Single-arm with linkage hole
What's Included
- One (1) aluminum 25T single-arm servo horn
- Mounting hardware
Fitment
- Traxxas TRX-4 (1/10 scale)
- Stock 25-tooth spline TRX-4 servos
- Other servos using 25T spline (verify before installation)
Summary
The Hot Racing CNC Aluminum 25T Servo Horn is one of the simplest, highest-impact steering upgrades for the Traxxas TRX-4. Sharper steering, longer life, and a clean blue finish — bolt it on once and forget about stripped servo horns for good.
