Nothing stainless on these. This is a summer only truck so hopefully I won't have the rust issues I had with my sliders on my Colorado.They look good! I use Duplicolor spray-on bedliner on stuff often. It seems to hold up to the MI winters ok.
No stainless hardware?
I have to think that it must help a little with aerodynamics. I'm sure it's such a small amount that it would be hard to measure but even a small amount adds up on a 4000 mile trip. The wind deflector that you see on my truck was made for my Chevy Colorado with this camper. It's a little small (48 inches wide) for this setup. Ideally it needs to be four inches wider and about two or three inches taller. At very least it eliminates bug splat on the front of the camper which can be hard to clean off.@northernexplorer did the air deflector you made help get any MPG back or has it only helped out with keeping noise down? My camper is lacking in the aerodynamics department and I am wondering if building an air dam like what you have is worth the time?