Gator-RC

Gator RC 2" Aluminum Servo Arm 25T 4-40 Thread – Futaba Style Red

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SKU: GRC-SA-147
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$7.55

Gator RC 2" Precision Aluminum Servo Arm – 25T Futaba Style

The Gator RC 2-Inch Precision Servo Arm is designed for RC pilots who demand accurate control response, secure spline engagement, and dependable linkage performance. Built from CNC machined aluminum and finished in anodized red, this servo arm is ideal for F3A, IMAC, aerobatic, and high-performance RC airplane applications.

This arm features a Futaba-style 25T spline along with a 4-40 threaded linkage hole commonly used in precision RC aircraft setups. The lightweight pocket-milled profile helps reduce unnecessary weight while maintaining excellent rigidity and control precision.

The dual pinch-clamp spline system helps create a secure, low-play connection between the servo arm and servo output shaft for improved centering accuracy and reduced linkage slop.

Key Features

  • CNC machined aluminum construction
  • Fits Futaba-style 25T servo splines
  • 2-inch control throw geometry
  • 4-40 threaded linkage hole
  • Can be re-tapped for M3 hardware if desired
  • Dual pinch-clamp locking spline design
  • Lightweight pocket-milled structure
  • Slim-profile precision arm design
  • Anodized red finish
  • Excellent for F3A, IMAC, and aerobatic aircraft
  • Helps reduce linkage flex and spline play

Precision Clamping Design

Unlike standard molded servo arms, this CNC aluminum arm uses a dual pinch-clamp locking system that helps reduce spline play and improve servo-to-linkage precision. This design is especially beneficial for F3A, IMAC, and aerobatic aircraft where accurate centering and repeatable control response are critical.

Why Use an Aluminum Servo Arm?

Aluminum servo arms provide increased rigidity and more consistent control transfer compared to many plastic servo arms. This helps improve control surface precision, especially when used with high-torque digital servos and larger control surfaces.

The 2-inch geometry is commonly used in aerobatic and precision aircraft where smooth linkage movement and predictable throw resolution are important.

Futaba Style 25T Compatibility

This servo arm is designed to fit servos using a 25-tooth, 6mm Futaba-style spline configuration. Many modern high-torque servos use this spline type, making this arm suitable for a wide variety of RC airplane applications.

Always verify spline compatibility with your specific servo before installation.

Specifications

  • Spline Type: 25T Futaba Style
  • Thread Type: 4-40 (American Standard)
  • Material: CNC Aluminum
  • Color: Red
  • Distance Between Hole Centers: 2" (50.8mm)
  • Total Length: 63mm (2.48")
  • Clamp Head Width: 13mm (0.51")
  • Body Width: 8mm (0.31")
  • Linkage Hole Diameter: Approx. 2.5mm
  • Lightweight pocket-milled body design

Recommended Applications

  • F3A aircraft
  • IMAC airplanes
  • Precision aerobatic aircraft
  • Sport aircraft
  • High-torque servo installations
  • Rudder and elevator linkage setups
  • Precision control surface applications

Installation Tips

  • Verify servo spline compatibility before installation
  • Center the servo before tightening the arm
  • Use thread locker on metal-to-metal fasteners where appropriate
  • Inspect pinch-clamp screws regularly on high-vibration aircraft
  • Ensure linkage geometry remains straight and bind-free throughout travel

Package Includes

  • 1 × Gator RC Aluminum Servo Arm
  • 1 × Servo Mounting Screw