MUGEN MRX-5 Aftermarket Spring Adjust Nut 7075 HARD - AM-MRX5-H0755 by Arrowmax  [AM-MRX5-H0755]

Replacement spring adjust nut for MRX-5

This adjust nut is intended for MUGEN MRX-5 shock assemblies and compatible spare parts that take a threaded spring preload nut. The 7075 HARD designation marks it as a tougher aluminium option for upgrading or replacing the standard adjuster.

Installation follows standard shock servicing: remove the shock cap or spring retainer, replace the original adjust nut with this one, and confirm smooth thread engagement before finishing assembly. Only basic hobby tools such as hex drivers are normally required, but always check thread compatibility with your MRX-5 shock top first.

For tuning, the adjust nut is used to set spring preload and small ride height changes on MRX-5 chassis. It will not change spring stiffness or damper action on its own, but provides a solid, repeatable interface for tuning and maintenance routines.