Upgrade your remote-controlled vehicle's steering system with the Red CNC Aluminum Servo Motor Arm Horn 25T AL Alloy. Designed explicitly for high-performance 1/8 and 1/10 scale RC cars, trucks, and custom robotic platforms, this heavy-duty servo horn provides a massive upgrade in strength, reliability, and precision over stock plastic components. Whether you are racing on rough tracks, crawling over technical terrain, or pushing your high-torque servo to its absolute limits, this aluminum arm eliminates the flexing and stripping commonly associated with stock injection-molded horns.
Upgrade your remote-controlled vehicle's steering system with the Red CNC Aluminum Servo Motor Arm Horn 25T AL Alloy. Designed explicitly for high-performance 1/8 and 1/10 scale RC cars, trucks, and custom robotic platforms, this heavy-duty servo horn provides a massive upgrade in strength, reliability, and precision over stock plastic components. Whether you are racing on rough tracks, crawling over technical terrain, or pushing your high-torque servo to its absolute limits, this aluminum arm eliminates the flexing and stripping commonly associated with stock injection-molded horns.
Crafted utilizing advanced Computer Numerical Control (CNC) machining processes, this servo arm is manufactured from premium aviation-grade aluminum alloy. The material selection ensures a high strength-to-weight ratio, preventing unnecessary load on your servo motor output shaft while providing unbreakable rigidity during high-impact maneuvers. The 25-tooth (25T) internal spline is precision-cut to tight tolerances, ensuring a secure, slip-free mating surface with the output shaft of standard-sized servos. Anodized in a vibrant red finish, the surface layer penetrates the aluminum substrate to offer superior resistance to scratches, chemical exposure, and environmental corrosion. Multiple pre-drilled and tapped linkage holes allow users to fine-tune the pushrod mounting position, tailoring the steering throw and mechanical torque output to specific driving conditions.
Designed to integrate seamlessly into standard RC setups, this servo arm accommodates industry-standard linkage hardware. The overall length, hole spacing, and thickness are engineered to provide clearance against standard servo cases while maintaining structural integrity under heavy side loads. Compatibility is verified across a wide range of popular high-torque analog and digital servos, including the MG995, MG996R, MG946R, MG945, EMAX series, and S3003. Exact dimensional metrics can vary slightly by manufacturing batch, but standard geometry ensures direct drop-in installation without requiring modification to the vehicle chassis or servo saver assembly.
This robust aluminum servo horn is ideal for a multitude of demanding applications. It is primarily utilized for steering and throttle linkages in 1/8 and 1/10 scale nitro, electric, brushless, and brushed RC cars, buggies, monster trucks, and rock crawlers. Beyond traditional hobbyist remote-control vehicles, it is widely adopted by engineers, makers, and robotics enthusiasts building custom pan-tilt camera mounts, robotic arms, animatronics, and automated mechanical actuators that demand fail-safe mechanical coupling under heavy loads.
Before installation, ensure that the servo output shaft is clean and free of debris. Align the 25T spline carefully with the servo gear teeth to avoid cross-threading or forcing the arm at an incorrect angle. It is highly recommended to use a small drop of medium-strength threadlocker (such as blue threadlocker) on the securing center screw to prevent vibrations from loosening the assembly during intense operation. Verify that your end-point adjustments (EPA) on your transmitter are properly calibrated to prevent the servo from stalling or binding against mechanical stops, which can cause internal gear damage despite the upgraded horn.
1 x Red CNC Aluminum 25T Servo Horn, 1 x M3 Mounting Screw
Honest takes from buyers who built with this part.
Ask anything — the team and other customers will reply.
