Blade68, I have a set of Rush slip-on on my 06 Street Bob and they sound very nice not to loud as to desroy your neighbors but a nice tone riding . They can get loud if you get on your bike. I bought them throug my local dealer and they put them on. I did not need a fule adjustment but did it for future work. The cost was $265.00. Go to Rush Mufflers and find the section and you can hear and pick out the ones you like.