Servo Arm Metal Single Side 1.25" JR
$9.99
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Servo Arm Metal Single Side 1.25" JR
$9.99
Heavy-Duty Aluminum
Anodized CNC Aircraft Grade
JR Fitment
Precision Spline Drive Compatibility
4-40 Tapped
Pre-Threaded Heavy Hardware Attachment
In Stock
Precision Steering LinkageMaximum Torque Transfer and Reliability
The MPI 1.25" Single HD 4-40 Aluminum Servo Arm, for JR Servos by Maxx Products offers exceptional rigidity and torque transfer for demanding RC airplane and high-performance control applications. Crafted from heavy-duty material, this servo horn eliminates flex under load to deliver crisp, immediate control response. Upgrade your model's control linkage with high-strength anodized aluminum construction built to withstand extreme mechanical forces.
Engineered High-Strength Servo HornDurable Anodized Aluminum for Custom Linkages
Designed specifically for high-torque applications, the MPI 1.25" Single HD 4-40 Aluminum Servo Arm, for JR Servos by Maxx Products provides the ultimate upgrade over standard plastic servo arms. Fabricated from CNC-machined anodized aluminum, this single-arm setup is pre-tapped with standard 4-40 thread mounting holes, ensuring a secure, slop-free linkage connection for throttle, rudder, or steering setups. Whether you are running a giant scale model aircraft or a custom RC rig, this heavy-duty arm delivers unmatched durability, accurate centering, and peace of mind during aggressive maneuvers.
Component SpecificationsDimensions and Hardware Fitment Details
Compatible Servos
JR Servo Splines
Part Type
Servo Arm / Horn
Arm Style
Single Heavy Duty Arm
Length
1.25 inch / 31.75 mm
Threading
4-40 Tapped Threads
Material
Anodized Aluminum
Placement/Position
Servo Output Shaft
Manufacturer
Maxx Products
Key Hardware HighlightsDesigned for Dependable Linkage Performance
Anodized Aluminum ConstructionSuperior strength without flex under load
JR Servo CompatibilityPrecise fit on JR output splines
Pre-Tapped 4-40 ThreadsReady for heavy-duty ball links and hardware
Single-Arm ConfigurationIdeal for compact and direct control setups
1.25-Inch LengthProvides optimal linkage geometry and control throw
Precision MachinedEnsures zero slop and accurate centering response
Frequently Asked QuestionsEverything you need to know
Which servos are compatible with the MPI 1.25" Single HD 4-40 Aluminum Servo Arm, for JR Servos by Maxx Products?
This servo arm is specifically engineered to fit the standard output spline patterns found on JR brand RC servos.
What hardware thread size does the MPI 1.25" Single HD 4-40 Aluminum Servo Arm, for JR Servos by Maxx Products use?
The mounting holes on this servo arm are pre-tapped for standard 4-40 threaded hardware, providing a rigid link connection.
Is the MPI 1.25" Single HD 4-40 Aluminum Servo Arm, for JR Servos by Maxx Products suitable for high-torque applications?
Yes, because it is machined from heavy-duty anodized aluminum, it eliminates arm flexing under high load, making it ideal for giant scale airplanes and high-stress steering linkages.