MRX-5 Rear Suspension Upright 7075-T6 - Arrowmax AM-MRX5-H2124 for MUGEN  [AM-MRX5-H2124]

What the rear upright changes on the car

The Arrowmax rear upright is an RC-scale replacement component machined from 7075-T6 aluminium for MUGEN MRX-5 platforms. Each upright is supplied with two sets of composite ring parts that sit at the pivot ball interface to boost suspension sensitivity and promote smoother articulation through both compression and rebound.

As a direct substitute for stock plastic uprights, the aluminium pieces alter chassis dynamics: the increased stiffness can produce a slight on-power push at corner exit relative to more compliant materials. Factor this into adjustments to toe, roll stiffness, or shock valving when restoring rear traction.

Installation is straightforward using standard wheel hub disassembly and pivot ball retention hardware, with no further modification required for MRX-5 installation. Use the supplied composite rings to incrementally tune pivot compliance rather than making large setup changes immediately.

For MRX-5 builders after a durable aluminium upright and more precise pivot-ball feel, the Arrowmax AM-MRX5-H2124 provides consistent suspension response and a predictable change in rear traction under throttle.