krewzlo
+1y
Mine are mounted behind the axle which gives a hair less lift but a little more weight capacity.
CONTI Triple Bellow 1/2" Port 2-Ply Air Spring 2800lbs rated - 5" Collapsed Ht., 22" Max Extended Ht. Factory Max Air Pressure - 120 PSI
That would be 5600 lbs max on the rear.
The most a tag hitch will carry is 12000 lb trailer weight = 1200 tongue weight and a fifth wheel will carry alot more but unless you got a diesel your truck is going to be limited to I believe around 20000 lbs at the max if I remember right which would be around 2000 lb tongue weight. I might be wrong on the 5th wheel/gooseneck numbers but I think I am in the ball park.
The bags are around 10" diameter. One thing with putting any bag on top of a bar as a mechanical advantage is going to cut down on your weight capacity.
They sell for around $175 each but I offer DS discounts.
Hit me up if you would like some pics, I can dig some up of my rear setup with out the bed on