Very easy to install I had to had small spacers on my lower pipes for my 06 1200 HD Sportster they look good and sound great I've had them for about a month. I've lost a few miles in city driving but think that's because I like the sound of them and rev at the light. I am glad I got them.
These are great, and are very easy to get on & off & get tight. I had the same issue of buying a set that were just slightly too big because of the vagueness of the sizing info. Now I have an extra pair that I cannot use. So for future first time buyers of these, the size listed is the absolute smallest size pipe it will tighten down on.
Other than that, the past is great and very sturdy.
Put these sweet things on my 2014 Dyna Low Rider. Awesome sound and greater looks. More smiles per mile! Fit and finish second to none. But.....the dip stick is difficult to check because the pipes interfere a bit. Other than that, worth every penny in performance.