Clutch Radiusx 4.0 Husaberg Rms-8313027RadiusX 4. 0 Clutch KitUpdated EXP (expanding friction disk) assembly Base material updated to provide better strength in high temperature environments, critical for the heat clutch systems create Internal wall bases redesigned for strength and rigidity, which helps translate to a more connected lever feel for the rider On the outside of the EXP disk, friction pads now match proprietary friction design found on Rekluse TorqDrive clutch plates, this