Futaba FUSG25 Servo Gear Pack for S25 and S125 Servos  [FUSG25]

Service replacement for S25 and S125 gear trains

This Futaba FUSG25 gear set is an aftermarket replacement intended for Futaba S25 and S125 servos. It arrives without retail outer packing and is meant for hobby-level maintenance and rebuild tasks.

When internal wear, stripped teeth, or a damaged gear train is discovered in an S25 or S125 servo, fitting this gear set restores internal alignment and helps prevent added stress on the motor and bearings. The product is supplied as individual replacement gears rather than a full servo unit.

Installation notes: carefully open the servo case, retain bushings and bearings, note original gear orientation before removal, install replacement gears aligned correctly, and confirm smooth mesh and endplay prior to sealing the case. Complete a low-voltage bench check before returning the servo to service.

Tuning and maintenance role: intended as a spare parts solution to maintain original servo behaviour after mechanical wear and to reduce downtime during active use.