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

Adjuster nut for MRX-5 shocks

This RC-scale spring adjust nut is made for use with MUGEN MRX-5 shock assemblies and spare parts that use a threaded spring preload collar. The 7075 HARD mark identifies it as a stronger aluminium alternative for replacing or upgrading the stock adjuster without changing the shock internals.

Fitting follows normal shock service steps: remove the shock cap or spring retainer, swap in the new adjust nut, and check that the threads run smoothly before reassembling. No specialist tools are required beyond common hobby hex drivers, but always confirm thread fit against your MRX-5 shock top prior to final assembly.

In everyday tuning this adjust nut provides reliable spring preload and wheel height adjustments on MRX-5 cars; it does not change spring rate or damping characteristics by itself, but gives a durable, repeatable contact point for fine tuning at the track or during routine maintenance.