Those who are looking for the highest in rear end performance should invest in the optimum in zero bind technology. This kit presses a steel sleeve into the stock upper bushing location on the rear end, from there a high quality spherical bearing is located internally allowing absolutely zero bind in the rear end suspension. This kit was built for the fastest and toughest drivers, allowing you to maximize your drive ability. The only note you street performance drivers might want to take in is, you can get road nose transfer through the upper arms. If this is a problem for you look into Global West’s rear adjustable uppers and stock rubber bushing setups.