Mugen MRX5 Spring Support Replacement 7075-T6 AM-MRX5-H0555 by Arrowmax  [AM-MRX5-H0555]

Precision spring supports for MRX5 shocks

This four-piece kit of shock spring supports is produced as a direct replacement for Mugen MRX5 shock assemblies. Machined from 7075-T6 aluminium, the retainers are milled to remove excess material while retaining structural sections, lowering rotating and reciprocating mass on the shock shaft without affecting fitment.

The components function as the lower seating for coil springs on MRX5 shocks, keeping the spring located and providing a repeatable reference for preload and ride-height adjustments. The design concentrates on accurate contact and concentric seating rather than aesthetic changes.

Installation is straightforward: remove the original spring support from the MRX5 shock and install the Arrowmax retainers in the same orientation as the factory parts. No special tools beyond standard shock disassembly tools are required and no modifications to the shock body are necessary for MRX5-spec shocks.

In tuning terms the part helps preserve consistent spring location during setup and testing, which can produce more repeatable handling between runs when altering preload or swapping springs during chassis tuning.

A solid, machined substitute for MRX5 spring seats intended to maintain stable spring positioning and support consistent setup outcomes when paired with standard MRX5 shock assemblies.