Motorcycle exhaust’s are noisier than usual if they need to be repaired or replaced. A dented exhaust can be unsightly, but repairing it is far cheaper than buying a new one. A hole in your motorcycle exhaust is a serious problem, however, and should be fixed by a professional even though you can do a temporary fix yourself.
Repairing a Dent - Remove the exhaust pipe by loosening the bolts that hold it in place.
Check the exhaust pipe every four hours to see if the dent is disappearing. If it is still dented after 24 hours, thaw it, refill it with water and reposition it in the freezer. Sometimes this process needs to be repeated three or four times.
Apply the cold-weld compound according to the directions that come with the brand you bought. Allow it ample time to dry. Start the engine and listen for leaks.
Start your motorcycle and listen to it. If the clamps are attached securely, the exhaust should run quietly.