Hirobo Eagle/Freya EX/SX Lever Shaft HI0404521 Compatible Replacement for RC Helicopters  [HI0404521]

Durability and linkage maintenance

This lever shaft set is an RC-scale spare intended for use with HIROBO Eagle, Freya, EX and SX family models commonly shown in parts lists. The text highlights service fit and ongoing maintenance role without claiming specific material properties not provided.

The component replaces fatigued or bent shafts found in collective and tail linkages, restoring smoother pivot movement and tightening up play in joints. Correct installation depends on matching shaft seating and any retaining parts, so verify fit against the rotor head and control arms before final assembly.

Installation notes: disassemble the affected linkage using your model's service steps, carry over any reusable bushings or bearings, and fit the replacement shaft ensuring it turns freely without binding. Retain original screws where appropriate and recheck servo horn engagement and control rod alignment after refit. Additional trim and balance adjustments may be necessary to recover precise control behavior.