There is an adjustable sway bar inside the stock one, you can see the bolt on the closest trailing arm that acts as an anchor for the adjustment portion on the other side. It allows me to add a left or right preload. Also, the whole thing is modified to lower ride height 1". It has spherical body mounts instead of the squishy stock rubber bushings, and revised shock mounts. If i had the coin i could run a true coilover setup in the rear.