MC 08-11
Service Bulletin/Repair Instructions
KAWASAKI: MUFFLER MOUNT BOLT REPLACEMENT. ON ELIGIBLE UNITS, THE UPPER REAR MUFFLER MOUNT BOLT MAY BECOME LOOSE DUE TO VIBRATION, CREATING A BUZZING SOUND. *PE
Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
MC 08-11
KAWASAKI: MUFFLER MOUNT BOLT REPLACEMENT. ON ELIGIBLE UNITS, THE UPPER REAR MUFFLER MOUNT BOLT MAY BECOME LOOSE DUE TO VIBRATION, CREATING A BUZZING SOUND. *PE
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.