I had the Yelvington trike site on my computer and checked it out a few weeks ago. Noticed that the site had changed and one of the things I noticed there was a few words that said there are still some trike sets available. Strange I thought best write a note to them and see what is going on. As it turns out they must be getting out of the trike business that is building trikes and in to reverse gears for Harley's and other brands of trikes.
I have a Trinity Trike set which was rebranded to Yelvington a few years ago. I must say when I bought the trike I thought I really had something. I did I had a lemon several issues the first two years. Then I got hold of a guy who specializes in trike sets. He said that the parts that Trinity used was junk. He rebuilt that back on the trike set using solid parts and now this bike is in excellent shape. Road it over 3000 miles without a issue and road it hard this past weekend. Not on issue. I love the bike now on a Burgman 650 bike.
Sorry to hear Yelvington isn't going to produce trikes any longer. Hope they do well with the reverse gear set up.