S25/S125 Replacement Gear Set - Futaba FUSG25  [FUSG25]

Replacement gears for S25 and S125

This Futaba FUSG25 servo gear set provides replacement gears for Futaba S25 and S125 servos. It is supplied without outer packaging and is intended for hobby-grade servo maintenance and rebuild work.

Use this gear set when internal wear, stripped teeth, or a failed gear train is detected in an S25 or S125 servo; replacing worn gears restores internal alignment and reduces load on the motor and bearings. The part is supplied as replacement gears rather than a complete servo assembly.

Installation notes: open the servo case carefully, keep track of small parts such as bushings and bearings, compare gear orientation before removal, fit the replacement gears with the correct alignment, and verify smooth mesh and endplay before re-sealing the case. Perform a low-voltage functional check on the bench before reinstalling in the model.

Tuning and maintenance role: this gear set functions as a spare parts item for routine upkeep, enabling hobbyists to retain the original servo performance after mechanical wear and to minimise downtime during events.