Originally Posted by
BikeWNC
The bottle cage fixtures are inserted in the frame with a pop rivet which can break. I had one do that on my Parlee when I hit a pothole. They can be replaced if that is the problem. Check to make sure the bolts are firm when screwed into the frame.
What kind of bike frame? On a steel frame the water bottle mounts are generally brazed in place. Most aluminum frames use riv-nuts which have been known to come loose now and then.