Try these Slip-Ons, you'll not be disappointed. " RUSH " slip-ons. Go under Google and type in : RUSH slip-on exhausts. It'll give ya a website to research them on.I've seen and heard a sey and they were very impressive for a set of " slip-ons". Take it easy, Hi- Tek Rednek
The new slip on's from HD fall short in the sound department. If you had a pair of the older SE II mufflers, then you would have a great sound. The rush mufflers offer different size baffles but if you go over 1 3/4 baffle you loose the required back pressure needed in the FI engines and loose torque.
I got a brother who has a set of rush slipons,high flow air cleaner with the S.E.R.T. on his 2007 fxstc. I'm not sure what model on the mufflers, they're slash cut out, but they sound good, his bikes fast, and get about 45 mpg.