My rear end does not seam to be flexing the axle almost seams to be stiff. This is just after cam bolts were installed. It used to push my back tire up in the wheel well but it flexed the front more now because the back is not compensating. Here are some pics

 

Go find a bigger rock It flexing just fine

 

I have been on bigger rocks that is as far as it will go no matter how big the rock the rear will not flex more

 

x2..........

 

The front will bottom out because the back will not shove the tire up in the wheel well anymore

 

I installed them as a temp fix till I can afford adj control arms it was on level ground and the lift was not changed