SB-M-1339-A
Service Bulletin/Repair Instructions
HARLEY DAVIDSON MC: A CHANGE IN ROTOR MATERIAL FROM STEEL TO GRAY CAST IRON MAY REDUCE CERTAIN BRAKE NOISE, WHICH CAN BE CAUSED FROM MANY VARIABLES. MODEL 2009-2013 TRIKE. *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.
SB-M-1339-A
HARLEY DAVIDSON MC: A CHANGE IN ROTOR MATERIAL FROM STEEL TO GRAY CAST IRON MAY REDUCE CERTAIN BRAKE NOISE, WHICH CAN BE CAUSED FROM MANY VARIABLES. MODEL 2009-2013 TRIKE. *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.