Hirobo HI2511021 M3 x 105 Cross Member  [HI2511021]

Structural brace for Hirobo helicopter frames

This cross member is an RC helicopter general part designed to act as a rigid connector for frame sections and mounting points. The M3 x 105 designation indicates the mounting thread standard and the overall length where M3 fasteners are used, helping to keep adjacent subframes and mounts in correct alignment.

In service the cross member preserves geometry during assembly and after minor repairs, reducing misalignment that can accelerate wear on bearings and transmission parts. It is ideal as a replacement component or spare in a maintenance kit to help retain proper drivetrain and rotor alignment.

Installation notes: fit using compatible M3 screws to the original mounting points, ensure threads are clean and undamaged before tightening, and check alignment while static. Avoid over-torquing to protect threads, and recheck tightness after initial bench tests.