MUGEN MRX5 7075 HARD Spring Cup by Arrowmax AM-MRX5-H0753  [AM-MRX5-H0753]

Spring cup for Mugen MRX5

This Arrowmax AM-MRX5-H0753 spring cup is an RC-scale replacement part manufactured from 7075 hardened aluminum for use on the Mugen MRX5 chassis. It is intended to serve as the spring seat at the top or bottom of a shock assembly, providing a durable interface between the shock spring and the shock body.

In practical setup work the component is used to maintain consistent spring position, reduce deformation under load, and support repeatable preload settings during suspension tuning. Because it is an alloy item with a hardened finish, it emphasizes wear resistance where springs and shock bodies contact each other.

Installation is straightforward on compatible MRX5 shock assemblies: remove the original spring cup from the shock, position the Arrowmax cup so the spring seats evenly, and reassemble the shock while checking for smooth spring travel and no binding. Verify fit before final reinstallation on the chassis and confirm clearance with the shock shaft and spring retainer.