Does not sound like anything major, I know when it comes to my bikes and vehicles, I always hear anything different. No one else ever seems to hear it. I have a small popping noise that I sometimes hear from my exhaust while cruising. No one else ever hears it, even while lisening for it.

 

Mine has nothing to do with the belt as it does it while in neutral. It started doing it after I pulled my baffles so I know its the pipes. Iwas thinkin maybe it was coming from the hole in the pipes where the baffles were bolted in.