I have a gently used Delkevic 16" slashcut exhaust. I used it for maybe 20 miles... was just too loud for me and I went back to the stock. I like listening to podcasts while I ride so that was a deal breaker for me. Make me an offer, looking ideally for local pickup/sale. There is a small area where the ceramic coating is flaking at the header bend, but I'm told this is normal.