FUSG25 Futaba Servo Gear Set for S25 & S125 Servos  [FUSG25]

Internal gear replacement for S25 and S125 servos

This Futaba FUSG25 servo gear set is an RC accessory intended as a replacement gear pack for Futaba S25 and S125 servos. It is supplied without outer packaging and is suitable for hobby-grade servo maintenance and rebuild work.

Use this gear set when internal wear, stripped teeth, or a failing gear train is apparent in an S25 or S125 servo; replacing the worn gears restores alignment and helps prevent additional load on the motor and bearings. The item is supplied as replacement gears rather than a complete servo unit.

Installation notes: carefully open the servo housing, keep track of small components like bushings and bearings, note the original gear orientation prior to removal, fit the new gears with correct alignment, and check smooth mesh and endplay before resealing the housing. Conduct a low-voltage bench test before returning the servo to service.

Tuning and maintenance role: this gear set acts as a spare parts option for routine upkeep, enabling users to maintain original servo function after mechanical wear and reduce downtime while in use.