I have this blue ring in the inside of my exhaust….I first noticed it and thought that it was just because the exhaust was running really hot. It looks like metal does when it gets heated to extreme temps. Anyways I let it sit over night and it is still there. Any ideas what this is? My buddy has the same bike we got them on the same day and he doesn’t have it. It’s a 2007 r6 with 1300 miles on it. I’m not home right now but I will take pictures when I get back and post them. If anyone has any idea what this could be please let me know. Thanks