Silver 25T CNC Aluminum Servo Motor Arm Horn Metal Alloy Replacement for 1/8 1/10 Scale RC Car Torque Pro EMAX MG995 MG946R MG996R MG945 S3003 Servos

Upgrade your remote-controlled vehicle or robotics project with the Silver 25T CNC Aluminum Servo Motor Arm Horn. Designed specifically for high-torque applications, this metal alloy servo horn is engineered to eliminate the flex and failure points commonly associated with stock plastic servo arms. Whether you are building a custom crawler, upgrading a bash vehicle, or assembling an advanced robotic arm, this component delivers the robust mechanical connection required to transfer maximum torque from your servo to your steering assembly or control surfaces. Precision manufactured from high-grade aluminum, it provides the reliability needed for competitive racing and heavy-duty DIY projects.

The horn features a standardized 25-tooth internal spline pattern, meticulously cut to ensure a tight, slip-free mesh with compatible output shafts. The use of CNC machining guarantees tight tolerances, ensuring that the splines engage evenly across the entire surface of the servo output shaft to distribute load and prevent stripping under sudden impacts. Multiple pre-drilled and tapped M3 linkage holes along the arm allow users to adjust the radius of the pushrod connection point, directly influencing the steering throw speed and torque multiplier. The silver anodized surface treatment not only improves the cosmetic appeal of your chassis build but also forms a hard protective oxide layer that resists wear from dirt, moisture, and debris encountered during off-road operation.

This heavy-duty servo arm is built to standard RC scale dimensions. The total length and hole spacings are optimized for 1/8 and 1/10 scale steering geometry. It is specifically compatible with standard-sized servos utilizing a 25T spline shaft configuration, including widely used models such as the TowerPro MG995, MG996R, MG946R, and various analog or digital servos featuring identical output configurations. The mounting hardware interface utilizes standard metric M3 threading, making it universally compatible with common RC turnbuckles, ball links, and pushrods.

This CNC aluminum servo horn is ideal for a wide variety of hobbyist and industrial applications. In the realm of remote-controlled vehicles, it serves as an indispensable upgrade for 1/10 and 1/8 scale monster trucks, short course trucks, rock crawlers, and nitro/electric buggies where steering loads exceed the limits of stock plastic parts. Beyond RC cars, it is frequently utilized in DIY robotics, automated camera pan-tilt mechanisms, mechanical linkages, and custom RC aircraft control surfaces requiring a rigid, fail-safe connection.

Before installation, ensure that your servo output shaft is clean and free of debris. Align the 25T splines carefully with the servo gear to avoid cross-threading or forcing the arm onto the shaft at an incorrect angle. Secure the assembly using the center retaining screw provided with your original servo, and apply a small drop of medium-strength threadlocker to the M3 linkage screws to prevent loosening from constant mechanical vibration during operation. Verify your end-point adjustments on your transmitter to prevent mechanical binding and protect your servo gears from stalling.

1x Silver 25T CNC Aluminum Servo Arm