Originally Posted by josephau

Hi there, that can be a number of possibilities. Here is a link to previous discussion on this subject: http://www.xt660.com/showthread.php?...ight=vibration

I believe my case is on the unique side. Another suggestion is if your gut tells you there is something wrong, go to the dealer where you bought the bike from, ride their test bike to compare (make sure it's full tank vs. full tank comparison as the vibration is most acute in my case), then ask them to compare. I did that and finally got their attention. Good luck.