Mugen MTX-5 7075 HARD Spring Cup Performance Seat by Arrowmax AM-MTX5-H2703  [AM-MTX5-H2703]

Precision 7075 HARD Spring Cup for MTX-5

The Arrowmax AM-MTX5-H2703 spring cup is an RC replacement component made for Mugen MTX-5 shock assemblies, machined from 7075 aluminium to provide a harder wear surface than common alloys. It forms the spring seat that locates and retains the shock spring on the shaft, promoting consistent spring placement and reliable suspension response during setup and tuning.

Fitment and function: intended for MTX-5 compatible shock platforms, this cup fits as a direct replacement or upgrade where an original plastic or softer metal spring seat is fitted. The 7075 alloy reduces wear at the spring contact area and helps maintain spring indexing across repeated runs, aiding accurate ride height and damping adjustments.

Fitting guidance: inspect mating surfaces for burrs or foreign matter before assembly, slide the cup onto the shock shaft to confirm unobstructed travel, and refit with the original retaining hardware tightened to the recommended torque. Do not force components that fail to align, and verify spring preload and free length after installation to check expected suspension behaviour.