JR Propo JRSG4000 Servo Gear Set for 4000 4135 4735  [JRSG4000]

Servo gear set overview

This gear set is an RC-scale replacement intended for JR Propo servos listed as 4000, 4135 and 4735. It serves as a direct spare for worn or damaged gears, restoring proper mesh and response without changing the servo case or electronics.

Compatibility is limited to the model codes shown on the product listing, so confirm your servo's model number before ordering. When replacing gears, note the orientation and stacking order of each gear and check for any wear on associated components such as bearings and shafts to ensure correct operation after reassembly.

Use this set as part of routine maintenance or when tuning servo performance for model setups, keeping the installation process focused on correct mesh, smooth rotation, and absence of binding to preserve servo longevity.