RADIUS X CLUTCH (DDS) HUS/KTMRadiusX is a high performance centrifugal auto clutch combining our TorqDrive and EXP technologies. TorqDrive provides more clutch disks in less space, allowing for maximum performance within your bikes existing clutch footprint. You retain full control of shifting and use of your clutch lever with no compromise in power delivery. Dead on clutch engagement every time Take off and stop in gear without using clutch lever no more stalls Experience