Overview
The Hitec RCD Standard Aluminum Servo Arm is a precision-machined upgrade horn designed for Hitec servos using the industry-standard 25-tooth output spline. Replacing standard plastic horns, this aluminum arm delivers stiffer, more precise control linkage performance — essential for high-load steering, scale builds, and any application where flex in a plastic horn would compromise feel and accuracy.
At 0.75" (19 mm) length, it provides a clean, compact servo-arm solution with a classic single-sided profile suited to a wide range of RC car, truck, and aircraft installations.
Key Features
- Precision-machined aluminum construction
- 25-tooth (25T) output spline interface
- 0.75-inch (19 mm) arm length
- Single-sided horn profile
- Stiff, low-flex linkage performance
- Trusted Hitec RCD quality
Performance Benefits
- Eliminates the linkage flex of plastic horns under load
- More accurate, more responsive servo-to-control feel
- Long-lasting metal construction stands up to heavy use
- Clean, professional appearance in finished builds
Usage Notes
- Tighten the servo screw firmly to lock arm to spline
- Check fit periodically and re-torque if needed
- Use thread-locker on the servo screw for vibration-prone applications
- Pair with quality ball links sized to your linkage hole
Fitment
- Designed for Hitec servos with 25-tooth (25T) output splines
- Compatible with most standard-size and full-size Hitec servos using the 25T standard
- Confirm your specific servo uses the 25T spline before purchase
- Suitable for surface and air RC applications
Technical Specs
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Material: Aluminum
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Spline: 25T (Hitec/JR standard)
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Length: 0.75 inch (19 mm)
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Style: Single-sided servo arm
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Application: Servo-to-linkage horn replacement/upgrade
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Part Number: 55701
What's Included
- (1) Hitec RCD Standard Aluminum Servo Arm
Summary
The Hitec RCD Standard Aluminum Servo Arm is a clean, precise upgrade for any Hitec 25T-spline servo build. Stiff aluminum construction, accurate machining, and a useful 0.75" length make it a smart replacement for flex-prone plastic horns in steering, throttle, and control-surface installations.
