Automotive

The Best RC Servo Arms

1 min read WeKompare Editorial Team Products verified: July 18, 2026 10 products compared

This post contains affiliate links. As an Amazon Associate we earn from qualifying purchases.

Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

RC servo arms are critical components that transmit the rotational force of your servo motor to control surfaces or other moving parts. The quality and material of these arms directly impact the precision, responsiveness, and durability of your RC model's steering and control systems. Selecting the appropriate servo arm ensures optimal performance and longevity for your vehicle.

No. 1
uxcell Plastic Servo Arms 25T White, 3mm Hole Single/Double Arm for Futaba 1 Set
uxcell Plastic Servo Arms 25T White, 3mm Hole Single/Double Arm for Futaba 1 Set
  • PARAMETER - head hole inner diameter:3mm, please refer to each style size from the description.
  • FEATURE - 25 tooth spline,1 set with 4 style steering arm to adjust.
  • for - Futaba.
  • MATERIAL - plastic.
  • PACKAGE CONTENT - 1 set x Servo Arm.
$12.39
Buy On Amazon
No. 2
YijiaLink 5pcs Aluminum 25T Servo Horn 37mm M2.5 Threads Metal 25 Teeth Extension Steering Arm Compatible with...
YijiaLink 5pcs Aluminum 25T Servo Horn 37mm M2.5 Threads Metal 25 Teeth Extension Steering Arm Compatible with...
  • Distance from hole center to hole center:15mm, 20mm, 25mm, 30mm; Size: 37mm (Total length); Thread: M2.5; Package Quantity: 5pcs
  • The servo horn is made of aluminum alloy, CNC machining makes it precise in size and stable in performance.
  • A great replacement part for your rc model cars.
  • Compatible with Futaba Savox Power Servos and so on.
  • Fits for 1/8 1/10 RC car truck and other RC models boat FPV.
$8.99
Buy On Amazon
No. 3
uxcell Plastic Servo Arms 23T Blue, 3mm Hole Single/Double Arm for JR 1 Set
uxcell Plastic Servo Arms 23T Blue, 3mm Hole Single/Double Arm for JR 1 Set
  • PARAMETER - head hole inner diameter:3mm, please refer to each style size from the description.
  • FEATURE - 23 tooth spline,1 set with 4 style steering arm to adjust.
  • for - JR.
  • MATERIAL - plastic.
  • PACKAGE CONTENT - 1 set x Servo Arm.
$9.99
Buy On Amazon
No. 4
YijiaLink 5pcs 25T Aluminum Servo Horn M3 Threads Metal Steering Arm for RC Car Truck Buggy Airplane (Black)
YijiaLink 5pcs 25T Aluminum Servo Horn M3 Threads Metal Steering Arm for RC Car Truck Buggy Airplane (Black)
  • Product name: 25T aluminum servo horn M3 threads metal steering arm.
  • Dimension: 35x15x6mm (Hole centers at 20 and 24mm from the servo output.); Package quantity: 5pcs
  • Adjustable type servo arm, includes two steel bolts to secure the split-clamp onto the servo output.
  • For Vehicle Type: for Buggy, Car, Truck, Truggy; Hard aluminum construction for precision and durability. Better than most of the plastic material.
  • Fits mostly standard servo motors. Compatible with Futaba Savox Xcore HSP HD Power TowerPro MG servo mostly 25T Standard Servo Motor.
$8.99
Buy On Amazon
No. 5
YijiaLink 5pcs Aluminum 25T Servo Horn 37mm M2.5 Threads Metal 25 Teeth Extension Steering Arm Compatible with...
YijiaLink 5pcs Aluminum 25T Servo Horn 37mm M2.5 Threads Metal 25 Teeth Extension Steering Arm Compatible with...
  • Distance from hole center to hole center:15mm, 20mm, 25mm, 30mm; Size: 37mm (Total length); Thread: M2.5; Package Quantity: 5pcs
  • The servo horn is made of aluminum alloy, CNC machining makes it precise in size and stable in performance.
  • A great replacement part for your rc model cars.
  • Compatible with Futaba Savox Power Servos and so on.
  • Fits for 1/8 1/10 RC car truck and other RC models boat FPV.
$8.99
Buy On Amazon
No. 6
YijiaLink 5pcs 25T Aluminum Servo Horn M3 Threads Metal Steering Arm for RC Car Truck Buggy Airplane (Blue)
YijiaLink 5pcs 25T Aluminum Servo Horn M3 Threads Metal Steering Arm for RC Car Truck Buggy Airplane (Blue)
  • Product name: 25T aluminum servo horn M3 threads metal steering arm.
  • Dimension: 35x15x6mm (Hole centers at 20 and 24mm from the servo output.); Package quantity: 5pcs
  • Adjustable type servo arm, includes two steel bolts to secure the split-clamp onto the servo output.
  • For Vehicle Type: for Buggy, Car, Truck, Truggy; Hard aluminum construction for precision and durability. Better than most of the plastic material.
  • Fits mostly standard servo motors. Compatible with Futaba Savox Xcore HSP HD Power TowerPro MG servo mostly 25T Standard Servo Motor.
$8.99
Buy On Amazon
No. 7
YijiaLink 5pcs 25T Aluminum Servo Horn M3 Threads Metal Steering Arm for RC Car Truck Buggy Airplane (Red)
YijiaLink 5pcs 25T Aluminum Servo Horn M3 Threads Metal Steering Arm for RC Car Truck Buggy Airplane (Red)
  • Product name: 25T aluminum servo horn M3 threads metal steering arm.
  • Dimension: 35x15x6mm (Hole centers at 20 and 24mm from the servo output.); Package quantity: 5pcs
  • Adjustable type servo arm, includes two steel bolts to secure the split-clamp onto the servo output.
  • For Vehicle Type: for Buggy, Car, Truck, Truggy; Hard aluminum construction for precision and durability. Better than most of the plastic material.
  • Fits mostly standard servo motors. Compatible with Futaba Savox Xcore HSP HD Power TowerPro MG servo mostly 25T Standard Servo Motor.
$8.99
Buy On Amazon
No. 8
YijiaLink 5pcs Aluminum 25T Servo Horn 37mm M2.5 Threads Metal 25 Teeth Extension Steering Arm Compatible with...
YijiaLink 5pcs Aluminum 25T Servo Horn 37mm M2.5 Threads Metal 25 Teeth Extension Steering Arm Compatible with...
  • Distance from hole center to hole center:15mm, 20mm, 25mm, 30mm; Size: 37mm (Total length); Thread: M2.5; Package Quantity: 5pcs
  • The servo horn is made of aluminum alloy, CNC machining makes it precise in size and stable in performance.
  • A great replacement part for your rc model cars.
  • Compatible with Futaba Savox Power Servos and so on.
  • Fits for 1/8 1/10 RC car truck and other RC models boat FPV.
$8.99
Buy On Amazon
No. 9
MEUS RACING SCX24 Servo Arm 25T Servo Horn for High Torque Micro Servo SCX24 1/24 RC Crawler Upgrades Parts...
MEUS RACING SCX24 Servo Arm 25T Servo Horn for High Torque Micro Servo SCX24 1/24 RC Crawler Upgrades Parts...
  • Pack of 2 pieces for replacement and long-term use.
  • 25T Servo arm, F = 5.0mm | Length = 20mm | M0.2, please check if the diameter of your servo gear is 5.0mm too.
  • Made of high quality aluminum with great durability.
  • Suitable for aftermarket servo for SCX24 1/24 RC Crawler.
  • Compatible with MEX8/MEX12 from MEUS, RS100 and other high torque servos from the market.
$9.99
Buy On Amazon
No. 10
uxcell Aluminum Servo Arms Double Arm 25T 4-40# Thread Red, for 3 Inch Futaba
uxcell Aluminum Servo Arms Double Arm 25T 4-40# Thread Red, for 3 Inch Futaba
  • PARAMETER - thread:American Standard 4-40#;distance from hole center to hole center:3 inch.
  • MATERIAL - CNC aluminum.
  • for - RC model airplane Futaba.
  • FEATURE - 25 tooth spline,alloy body makes it work better than plastic one,stronger and solid.
  • PACKAGE CONTENT - 1pc x Aluminum Servo Arm.
$13.99
Buy On Amazon

This article is part of our complete guide Automotive — browse all our comparisons and buying guides.

Related comparisons

All products in Automotive →

Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best RC Servo Arms

Material Matters

  • Plastic: Often found on budget-friendly models or as stock parts, plastic servo horns are lightweight and inexpensive. However, they can be prone to stripping or breaking under high stress or impacts.
  • Aluminum: A popular upgrade, aluminum servo arms offer significantly increased strength and rigidity. They are less likely to bend or strip, providing more precise control, especially in demanding applications.
  • Carbon Fiber: For ultimate strength-to-weight ratio, carbon fiber is the top choice. These arms are extremely stiff and lightweight, offering superior precision and durability, though they can be more expensive.

Size and Spline Count

  • The length of the servo arm influences the leverage and travel range of your control surfaces. Longer arms provide more travel but require more torque from the servo, while shorter arms offer less travel but are more direct.
  • Crucially, ensure the spline count (the number of teeth where the arm connects to the servo output shaft) matches your servo. Common counts include 23T (Futaba), 25T (Savox, Traxxas), and 24T (Hitec). Using the wrong spline count will prevent proper installation.

Type of Arm

  • Single Arm: A simple, direct arm often used for basic steering.
  • Dual Arm (or 'H' arm): Provides two points of attachment, often used for steering linkages on cars or for connecting to multiple points on aircraft control surfaces.
  • Disc/Plate Arm: A circular or plate-like arm with multiple mounting holes, offering flexibility in attachment points for various applications.

Frequently Asked Questions

What is the difference between a 23T and 25T servo arm?
The 'T' refers to the number of teeth on the spline that engages with the servo's output shaft. A 23T servo arm is designed for servos with 23 teeth, commonly used by brands like Futaba. A 25T servo arm fits servos with 25 teeth, often found on brands like Savox and Traxxas.
How do I know what size servo arm I need?
The size, or length, of the servo arm affects the amount of throw or travel your control surface can achieve. Longer arms provide greater throw but require more servo torque, while shorter arms offer less throw and a more direct response.
Can I use a plastic servo arm on a high-performance RC car?
While plastic servo arms are functional, they may not be ideal for high-performance or demanding applications. They are more susceptible to bending or stripping under stress, which can lead to loss of steering control. Upgrading to aluminum or carbon fiber is often recommended for improved durability and precision.
What does 'spline count' mean for servo arms?
Spline count refers to the number of teeth on the servo horn's output shaft interface. This must match the servo's output shaft to ensure a secure and accurate connection. Using an incorrect spline count will prevent the arm from fitting onto the servo.
Are carbon fiber servo arms worth the extra cost?
Carbon fiber servo arms offer excellent strength and rigidity while being very lightweight. If you prioritize the highest level of precision, responsiveness, and durability, especially in competitive RC applications, they can be a worthwhile investment.