Y-Type Servo Horn D5mm for Futaba S3103/S3107/3153/3156/3157 - FUSHORN-Y Futaba  [FUSHORN-Y]

Y-type servo horn designed for Futaba models

The Futaba FUSHORN-Y is supplied as a Y-shaped servo horn intended for direct replacement or spare inventory with compatible Futaba servos. Five horns are included in the pack, suitable for hobby setups where keeping spare parts on hand is helpful.

Compatibility is limited to the listed servo models: S3103, S3107, 3153, 3156, and 3157, and the horn mates to a D5mm spline output. It is manufactured to match the spline engagement for those servos so it installs onto the servo output shaft and uses the servo's existing fastening hardware.

Installation and tuning notes: begin by centering the servo, then mount the horn, verify arm orientation and linkage geometry, and test for full travel without binding. Fitting this Y cross-arm can refine control-link geometry and offers a straightforward mechanical route to adjust leverage and throw rather than relying solely on electronic endpoint changes.