I just ordered Durobump bump stops for mine. I have a Radflo extended suspension setup and I got the 4.25” rear with the 0-3” fronts. My 4Runner is at about 3” lift with HD rear springs that have a height of 2.5”. If you have a 12” or longer stroke long travel shock, with 3”+ lift, then, Durobump recommends using the 5.25” rear stops.
I’m not sure about the other manufacturers.
https://m.youtube.com/watch?v=cahTrOM2BJI