SX Root End Linkage Replacement - HIROBO HI0404507  [HI0404507]

Service Root End for SX Series

This HIROBO HI0404507 SX root end is an RC-scale linkage connector made as a serviceable replacement for SX series rotor linkages. It functions as the small but essential joint that links the rotorhead arm to tail and servo linkages, enabling precise control motion.

The component is listed as compatible with common parts sets for Eagle, Freya, EX and SX platforms, so fit it when maintenance or repair calls for exchanging a worn linkage endpoint. Use the part for routine inspections, alignment checks, and end-point adjustments during setup or after a field incident.

Installation notes: press the root end into the matching rod end and secure with the original retaining hardware, then confirm free movement across the rotorhead sweep and minimal lateral play. After fitting, recheck collective and tail linkage geometry to preserve trim and tracking settings.