The JW Offroad website lists a lead time in the description for each product. For the tire carrier it says 3-4 weeks. I think it was about a month when I bought mine a few months ago.
I've got a buddy who likes to weld so we're going to put on a Coastal Offroad rear bumper in a couple of weeks. Saves some coin. It's about a clearanced as you can get given the placement of the rear crossmember.