I'm sure they aren't and when it comes down to it its just one of a half dozen other things a cop is going to be able to pin on you if you piss him off enough.
Personally I'm a big fan of function over form so all the mods I've done to my bike are purely for improving handling, power or just making the bike easier to live with day to day.
But i have to admit the new rear end does look better than the origonal.
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