I had a set of Rush 1.75" on my 07 ultra. As my luck usually runs they forgot to send the bolts with the tips. One phone call and the hardware was "next day" to my door. Great company and product. I'm looking for a set for my new bike but can't find anyone online that sells the tip compatible muffler. I don't want to go to my dealer again and hear the whole AC/fuel tuner sales pitch. I'm going with the 1.75" again for now and may go with the 2" or 2.5" baffle/AC/tuner option later.