I installed these on a 2017 Harley Davidson Softail FLSTC. The installation was straightforward and took about an hour from start to finish. These are very good looking mufflers that also sound great. they are really a nice step up from the OEM mufflers. I have a Roland Sands intake, and a Vance and Hines FP-3 tuner. After the install and tune, i got a little deceleration pop. After correcting that with my tuner, everything was fine. these things are sweet, with a nice rumble. Loud, but not too loud unless you want them to be. They also noticeably stepped up performance, especially in the low end of the spectrum. In summation, I really like the looks, sound, and performance of these slip-ons.