I have a little bit of insight on this topic, and I hope it helps. I wanted a bike rack to attach to the bumper of my X19, so I did an internet search and found a bumper adapter that bolted to the 4'' bumper, and you just slid whatever component you wanted into it. Think of it as a 2" receiver that bolts onto an RV bumper. From the pictures, descriptions and customer comments displayed on the website, it was the perfect solution to my problem. I went to the RV dealer where we bought our TT, told the salesman what I was trying to do, he showed me the two different ones they carried in stock, and recommended the Swagman adapter, because it had a better warranty. So I bought it. I took it home, bolted it on as per the manufacturers instructions, put the bike rack and 3 bikes on it, and we were off to the CG. When we got to the CG, I immediately noticed that the bumper was twisted; the welds were still intact, but the actual bumper was tearing--the steel!! For the trip home, the bikes were inside the TT, the bike rack was in the TV, and I was.......upset. I called the dealer where I bought it, he said it "Wasn't their problem, call Swagman." I called Swagman, they faxed me a claim form. I filled out the claim form, sent pictures, and waited. Within a week, a manager from Swagman called me and said "The adapter you bought and installed correctly was NOT for Jayco products." Another call to the Jayco dealer where I bought it at, and this time they were willing to listen... Especially after I told him that the parts counter salesman specifically recommended that particular adapter to me, and Swagman said it is NOT for Jayco TT's. My dealer replaced the bumper, and for $230, they reinforced the bumper in 2 different locations so that I could use that adapter on my TT. I haven't tried it again, but I will this summer. I wish you luck, and I hope this helps.
2015 Jayco 32 TSBH
2015 Ford F-150 3.5 EcoBoost