The Harley muffler clamps actually bend when tightend.&nbsp\\; They take a set and do not return to the original shape when loosened.
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Some people change them every time.&nbsp\\; Others say they can be reused only once and other just keep using them over and over again.
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I know that mine were reused&nbsp\\;two times befroe I installed the SE slip-ons.&nbsp\\; For&nbsp\\;about $20 for two clamps, I decided to buy new ones when installing the SE slip-ons.
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I have seen numerous posts with people complaining about their slip-ons coming loose.&nbsp\\; The reply has always been - buy new HD clamps to solve your problem.
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When installing slip-ons, you must make sure that the mufflers are pushed on far enough so that the slits in the pipe on the front of the slip-ons fully engage the exhaust pipe.&nbsp\\; There should be no openings visible when you install the clamps.&nbsp\\; Even the slightest opening will create an exhaust leak which will cause popping on deceleration.&nbsp\\; That is another reason for using new clamps.
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Some people recommend using a muffler sealer or high temperature RTV (silicone) when installing new mufflers.&nbsp\\; I have not done that, but many have.

 

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I ride with a 1/2 helmet and never had a buzzing in my head after a long day. They have a nice low rumble but will bark when you twist the wrist