While riding on a public road at moderate speed, I began experiencing unusual handling characteristics. The motorcycle felt very much like it had a soft or flat rear tire, with the bike swaying from side to side. I stopped to check the rear tire pressure, believing that might be the cause of the unusual handling. Instead, I discovered something far more alarming. The swingarm pivot axle had migrated approximately 1 inch out of one side of the motorcycle’s frame. Upon examining the opposite side, I could see completely through the frame opening to the swingarm. The swingarm itself had shifted so significantly that it was no longer aligned with the opening in the frame through which the pivot axle is designed to pass. In other words, the structural connection between the frame and swingarm had substantially separated while I was riding the motorcycle. The swingarm is an integral part of the motorcycle’s frame and rear suspension system. Its pivot connection is essential to maintaining the proper relationship between the frame and rear wheel assembly. I consider this an extremely serious safety failure. Fortunately, I was traveling on a straight road at moderate speed when the problem became apparent. Had this occurred while cornering, riding aggressively, or operating off-road, the consequences could have been catastrophic. A loss of rear suspension integrity and alignment under those circumstances could easily have resulted in a serious accident or fatal injury. I am particularly concerned that this may represent a broader product safety issue rather than an isolated mechanical failure.
- NHTSA ID
- 11776304
- Incident
- Nov 3, 2026