I appreciate the feedback. I would be 100% for the Mx4 if I knew I could fold it into the last 3rd and still put my bike in the back. Unfortunately I can't find measurements on the tonneau when it's folded up. I have a pretty big mountain bike a 73 inches wheel to wheel. I don't know anyone with one or I would just measure it out.
They don't have measurements of each panel, but we can work backwards to get a rough idea. Raptor short beds going to be about 67" inside to inside. Cover is a tri-fold, but you have about a 5" flap panel that sits at the cab, so each panel is going to be about 21", plus the 5" flap panel, should take up approximately 26". Albeit this is a pretty rough estimate, it should give you an idea on clearance with your bike.