This is the optional super hard clutch spring for the Mugen MTX and MRX on road cars. The super hard spring will cause the clutch to engage at higher RPMS, for more punch coming out of the corners.
This product was added to our catalog on May 27, 2004
clutch springs for the Fioroni sliding clutch systems. These are stiffer than the stock springs, allowing you to mix and match spring tension within your clutch setup to provide a higher RPM ...