Well, my old DT receiver hitch is 2" and the hitch on my new 2018 is 2 1/2. Don't like the idea if using the adapter sleeve and undersizing what the truck is rated for. IMO the adapter sleeve is just for a quick stop gap and hitch covers. Guess I'm in the market for a new receiver hitch. I really liked the adjustability of my DT and it was very clean looking. That said it didn't hold up well to use as far as the finish goes. What else is out there in a class V 2 1/2. The Anderson Rapid Hitch is looking pretty good.