Yes, I had to install the adaptor kit which is just a piece of tubing about two inches long. I wielded it to the back of my honda's muffler and then the new silencer just slips on and bolts to the rear rack braces. Some adaptor kits is just a piece of tubing that will slip onto the 4 wheeler muffler without wielding it but mine I had to wield it.
Go get it, you'll love the result.
BBO