Instant and noticeable difference in tracking and control on asphalt. I bought my zj with 31s and after reading reviews of this product I thought it could be a good precautionary addition to keep from breaking stuff on the trail. Didnt have any noticeable looseness in my steering box so I wasn't expecting to notice a difference but the difference was immediately noticeable just driving a couple miles on asphalt. My steering is tighter and that wandering and play driving down windy roads is gone. Install was easy. Took me an hour but if my 3 year old hadn't been helping it would have been 20 minutes. I recommend slipping in the bolts that hold on the collar into the brace before you put it in place because it is much easier to put the nuts on that way plus they won't push on the radiator hose. I installed it and then removed it and put it back on once I realized how much easier it is to get the nuts on with the bolts for the collar already in place.