^ it will make a difference when your on un-level ground and your axle can stretch so all tires are on the ground still. If you really want to see disconnect your swaybar, jack up your axle and place jack stands behind the lower control arms on the frame and let the axle off the jack so it will hang at full droop that will give you a good idea of down travel. Then with the jack stands still in place jack up one side of the axle and stuff the the tire in the wheel well.
The differance between disconnected and connected is huge, The first run I ever ran discoed was holy cross trail in CO. My rubi flexed more than it ever had before and I walked up things I had no idea I could make. the only thing better is going with an Antiroc, I dont know how they work so well, they just do. Check out Currie.
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