🔧 CR Aluminum Clamping Servo Horn (Blue) – 25T

Precision steering starts at the servo output. The Cobra Racing 25T aluminum clamping servo horn replaces weak, flex-prone plastic horns with a rigid, slip-free aluminum design that keeps steering input consistent under load.

This is a clamping-style horn — not a set-screw arm — so it locks evenly around the servo spline and stays put during hard bashing, racing, or crawling. Clean install. No drama.

❓ Why Upgrade Your Servo Horn

Plastic servo horns are a known failure point. They flex, round out, or slip when steering loads spike. That leads to vague steering, inconsistent centering, and premature servo wear.

This aluminum clamping horn:

• Eliminates spline slip under load

• Improves steering response and return-to-center

• Protects your servo from shock loads

• Holds geometry during hard impacts and repeated runs

It’s a small part that fixes a big problem.

🧠 Engineering & Design

Clamping Interface (Zero Slip)
The split-clamp design distributes clamping force evenly around the spline, preventing movement without overtightening.

7075-T6 Aluminum Construction
Machined from high-strength aluminum for rigidity without unnecessary weight. Built to handle racing, bashing, and trail use.

25T Spline Standard
Designed for servos with a 25-tooth output spline (Traxxas / Savox / Futaba standard).

⭐ Key Features

• 25T spline compatibility

• Aluminum clamping design (no set-screw slip)

• Lightweight, high-strength aluminum

• Clean blue finish with chrome highlights

• Simple bolt-on install

🧩 Compatibility (Read This — Servo First, Vehicle Second)

This servo horn fits ANY servo with a 25T output spline. Vehicle compatibility depends on the servo installed, not the chassis alone.

Guaranteed Compatibility

• Compatible: Any standard 25T spline servo (Traxxas / Savox / Futaba standard)

Common Traxxas Platforms

(when equipped with a stock or upgraded 25T steering servo)

• Slash 4×4 – VXL, XL-5, BL-2S, Ultimate, Platinum

• Slash 2WD – all trims

• Rustler 4×4 / 2WD – all trims

• Stampede 4×4 / 2WD – all trims

• Bigfoot  – 4×4 / 2WD – all trims

• Hoss 4×4

• Rally / Fiesta Rally ST

• Telluride

• For Raptor – 4×4 / 2WD- all trims

Crawlers

(25T steering servo required)

• TRX-4 – all variants

• TRX-6

Important Fit Notes

• Not compatible: Arrma & Axial RTR vehicles with stock 23T Spektrum servos

• Compatible: Arrma & Axial vehicles upgraded to a 25T steering servo

• Not compatible: Traxxas MAXX / X-MAXX stock servos

• Compatible: MAXX / X-MAXX vehicles converted to a standard 25T servo

Quick check: If your servo is 25T, this horn fits. If it’s 23T, it doesn’t.

🛠️ Installation Notes

• Remove the stock servo horn

• Center the servo electronically

• Slide the horn onto the spline

• Tighten the clamping bolt evenly

• Re-check steering endpoints

Pro tip: Pairing this horn with a rigid bellcrank eliminates flex throughout the steering system.

📦 What’s Included

• 1 × Blue aluminum clamping servo horn (25T)

• 1 × Stainless steel clamping screw

🎨 Color Options

Prefer a different finish? This servo horn is also available in Black, and Red.

🔗 Steering System Upgrades (Recommended)

For maximum steering precision, pair this horn with a matching aluminum steering bellcrank.

If you’re dialing in an RTR, updating your bellcrank is one of the first upgrades pros never skip — covered in RTR Isn’t Ready — The Baseline Setup Pros Never Skip.

Browse additional:
Traxxas 1/10 scale parts & upgrades

or continue building from the:
Cobra Racing shop.

🏁 Final Word

The Cobra Racing 25T aluminum clamping servo horn is a simple, high-impact upgrade that removes flex, prevents slip, and sharpens steering feel. Built for drivers who want steering to stay locked in — run after run.

If your servo is 25T, this is the fix.