MUGEN MRX-5 Joint Shaft (spring steel) by Arrowmax AM-MRX5-H0273  [AM-MRX5-H0273]

Universal joint shaft, spring steel

This Arrowmax AM-MRX5-H0273 joint shaft is an RC-scale replacement part supplied as a two-piece set, made from spring steel to retain shape under repeated motion. It is offered for use with MUGEN MRX-5 universal drive assemblies where the original shafts are used.

Functionally, the shaft serves as the rotating pin inside universal joints and is intended to maintain alignment and load transfer between drive cups. Spring steel provides resistance to bending and fatigue compared with softer metals, helping the shaft hold tolerances during normal hobby use.

Installation is a direct swap into the model's universal assembly, replacing worn or bent shafts. Check the model's retaining method and seating before final assembly, and confirm smooth rotation through the joint after fitting. The part is presented as 2 pcs per pack for straightforward replacement of both sides of a drive set.