from what I understand they are pretty obnoxious...............
i had a supertrapp before my tractor muffler and i also think that the trackor muffler gave me alot more low end, with the right jetting a tractor muffler can really light up a 4wheeler.i ments got a lot more power out of the fo-14, supertrapp isnt all the people make it out to be. if u want it to be louder and more power get the fo-14, cheap and easy