Is anyone familiar with or know what's going on here? It's discolored and course feeling. Is it normal? Something to be concerned with?
Excellent. Yes it is on the rear cylinder and I havent removed the cat yet. A guy I worked with said he thought I should be able to replace the removable section as you described. Thanks for validating this.If that's like my bike, it is on the rear cylinder of the bike, and you likely haven't removed the Cat at this point.
It's basically the powdercoat/paint on the fins that got really hot and bubbled. I replaced the fin section that is removable for header pipe access. Did it about a year ago right after removing the Cat on my RM and it's been fine ever since.