2017JD1025r
Member
That's exclusive to D/C, the Fleetneck. They also use an engineered beam main frame (14"-18" depends on GVW) with built in arch like a semi trailer. Here is a close up of the gooseneck and note the arch on the full length pic.
View attachment 685241View attachment 685242
Watched a few reviews explaining those exact details. They seem to be a well built version of a well built trailer