I have Rush slip ons on my 09 ultra classic with 2 inch baffles. I don't like them very much. Some have told me to change the baffle to a 2 1/4" others have said to just take the baffles out. I'm not sure what to do. I heard some supertrapps on an 09 ultra today that I really liked. I might be about to purchase anther set of slip ons. lol