XRB EX M4 Ball Link - HI0301023 Hirobo  [HI0301023]

XRB EX M4 Ball Link Overview

This is an RC-scale replacement ball link listed under Hirobo XRB parts, intended for use with XRB EX series helicopter linkages. The component is presented as a direct spare part designation HI0301023 and is intended to restore or maintain ball-end linkage function on scale models.

For installation treat the item as a like-for-like spare: remove the worn ball link, confirm the M4 thread engages cleanly with the control arm or pushrod, and secure the fitting so the ball joint moves freely without play. Do not force mismatched hardware and check for smooth articulation across the control throw after fitting.

From a setup standpoint, changing ball links alters servo-to-linkage geometry. Use HI0301023 when restoring original linkage dimensions to regain predictable response and repeatable control behavior.