NHTSA (USA)Critical
2003 HONDA ST1300NHTSA Campaign #05V010000
The official notice
Defect
CERTAIN MOTORCYCLES EQUIPPED WITH COMBINED-BRAKE SYSTEMS HAVE A PROPORTIONING CONTROL VALVE (PCV) THAT MECHANICALLY PROPORTIONS BRAKE FORCE WHEN THE REAR BRAKE IS APPLIED. A SEAL IN SOME PCVS IS IMPROPERLY SHAPED, AND BRAKE FLUID LEAKAGE MAY OCCUR.
Safety Risk
IF THE MOTORCYCLE CONTINUES TO BE USED AFTER A LEAK OCCURS, THE REAR BRAKE WOULD EVENTUALLY BECOME INOPERATIVE. A LOSS OF REAR BRAKE FORCE COULD INCREASE THE RISK OF A CRASH.
Remedy
DEALERS WILL INSPECT THE REAR BRAKE FORLEAKAGE. IF LEAKAGE IS CONFIRMED, THE DEALER WILL REPLACE THE PCV FREE OF CHARGE. THE RECALL BEGAN ON JANUARY 31, 2005. OWNERS MAY CONTACT HONDA AT 866-784-1870.
Updated June 10, 2026