Maybe the bumper isn’t strong enough?? Well dealer told me those instructions only on portal. I may end up replacing entire bumper with an aftermarket but it worked great today. If you are pulling 3500lbs. Maybe you need a different vehicle?
The crossmember across the back (rear bumper) that the Roxor receiver hitch mounts to is not strong enough by itself, that is why the receiver and the pintle hitch/combo have extra mounting and plates, then it is more than adequate.
Go to
roxoroffroad.com and scroll to the bottom, there you still see "service and support", the accessory installation listings are there, it's not a secret, your dealer is just misinformed, that's all. Not all of them are there, some might be in a dealer only portal, I don't know, I don't have access to dealer only stuff. You will also find the full parts catalog there and you can pick your dealer and order parts online and have them shipped to your dealer and pay upon pick up. FYI: Oil filters are only $6.99 in the parts book.
This thing will pull more than 3500 easily. It is also rated for only 349 pound payload. These numbers are imposed mostly by the EPA. I carry 1000 pounds of water (120 US gallons) with room to spare. It walks away with it. I also tow just shy of a cord of green aspen and full cord is rated at about 3900 pounds, I don't even know it back there except that the Roxor rides really nice,. lol
The Roxor receiver hitch and pintle combo will handle anything you can throw at them I think. The only reason to change is maybe if you want a different look. If you are like me, "function over fashion", then there is no reason to change them. lol