Mugen MRX-5 Clutch Spring Super Hard - Arrowmax AM-MRX5-H0767  [AM-MRX5-H0767]

Super hard spring built for MRX-5 compatibility

This item, Arrowmax AM-MRX5-H0767, is a super hard clutch spring made from spring steel and offered as an aftermarket tuning or replacement part compatible with Mugen MRX-5 clutch units.

Fitting is straightforward and follows standard clutch servicing: remove the bell and shoes as required, replace the current spring with this unit, then reassemble and confirm free play and engagement. No uncommon tools are needed; it is good practice to check shoe alignment and bell runout after the swap to keep engagement smooth.

Tuning guidance: a super hard spring increases preload and moves the engagement point higher than softer springs, which helps limit slip under load. When moving to a stiffer spring, revisit clutch shoe thickness and bell condition to preserve consistent engagement characteristics.