sadly, the same thing doesnt apply on a quad as on a bike. I used to ride dirtbikes before I decided to switch over and my sister still does ride so I ride her’s every once in a while. I can countless laps on her bike, where I would get tired with half the laps on my quad…just think about it…
on a quad you are fighting 4 times the width, twice the weight, you pick up 3 times the track conditions etc. I have a steering dampener on my quad but that doesnt help for arm pump.
As far as frame rails, I have pro peg nerf bars on my quad. The pegs are 4" wide…
I also have a anti-vibe steering stem on my quad, with a anti-vibe tripple fat bar clamp along with the steering dampener. I dont get alot of bad vibration but I still get enough due to my quad being a hybrid and having a dirtbike motor instead of a quad motor which have internal balance rs to reduce vibration.