TRX4M Compatible 25T Aluminum Servo Arm Horn For Beefed Up High Torque Micro Servo Upgrade 1 By 18 RC Crawler Not For Stock Servo F 5.0mm 20mm Length M0.2 Thread Durable Aluminum Build Fits RS100 MEX8 MEX12

1x 25T Aluminum Servo Arm Horn for TRX4M 1/18 Crawler ✔️ 25T aluminum servo arm, F=5.0mm bore, 20mm length, M0.2 thread

This is a 1x 25T aluminum servo arm horn designed for TRX4M 1/18 scale RC crawlers. It’s built to upgrade high-torque micro servos and works with RS100, MEX8, and MEX12 aftermarket servos. Not for stock servos.

✅ 5.0 mm bore and M0.2 thread for secure mounting
✅ 20 mm length fits TRX4M 1/18 crawlers
✅ Aluminum construction for durability under high torque
✅ Compatible with RS100, MEX8, MEX12 and other high-torque servos

💡 What is a servo arm horn used for in RC crawlers?

It's the connector between the servo and the steering linkage, translating rotation into controlled movement. For high-torque setups, an aluminum horn adds rigidity and improves accuracy.

- Designed for 25T servos with 5.0 mm bore and M0.2 thread - Handy for TRX4M 1/18 crawlers using RS100, MEX8, MEX12 or similar servos - Improves steering response and accuracy under load - Easy upgrade path from stock arms to beefier aluminum horns ✝️