MUGEN MRX5 Precision 7075 Aluminium Spring Cup - AM-MRX5-H0753  [AM-MRX5-H0753]

Aftermarket spring cup for MRX5

The Arrowmax AM-MRX5-H0753 spring cup is crafted from 7075 aluminium as a direct replacement for the Mugen MRX5 shock seat. It functions as the spring seating point at either end of the shock, offering a robust contact surface between the spring and shock body.

During tuning the cup helps lock spring position, reduces cup deformation under load, and supports repeatable preload adjustments so you can reproduce setup changes reliably. The hardened alloy surface is aimed at resisting wear where spring coils meet the shock assembly.

Installation onto compatible MRX5 shock assemblies is simple: remove the existing cup, fit the Arrowmax unit so the spring sits true, then rebuild the shock while checking for smooth shaft motion and no binding. Confirm clearance with the spring retainer and surrounding components before refitting to the chassis.