In my opinion, if you get 3" or more of lift, you MUST have trackbars. I recently installed trackbars on my jeep and it made a big difference in handling. When you lift your jeep, the axles shift over. New adjustable track bars can be lengthened to compensate for this and recenter your axles. Without them, your ride will feel flighty and when you hit bumps your jeep will feel like it wants to turn. Honestly, I think anyone with a lift should get them, but it isn't always necessary. I drove my jeep for several months without them. Like I said, it made a big difference once I added them.