I hit a big rock on my first FJR that deformed the wheel and then it rolled back and dented two of my Holeshot header pipes. Insurance paid for new headers but I hadn't gotten around to replacing them when the whole bike got thrown onto some rocks, somehow. Well, the point is I didn't replace the headers because the dent didn't interfere with the way the bike ran at all, as far as I could tell. I had the shop guys take a look and they agreed. So the question is, how bad is this dent you're talking about? Do you really need to get new ones? I like the Muzzy system for sound and weight reduction. I'd be thinking about repair if it were mine, for whatever that's worth.