The Cusco OS Strut Tower Bars eliminate chassis flex at the most vital area of your 2000-2006 Toyota MR2 Spyder, MR-S, Roadster (ZZW30) - between the strut towers, essentially to prevent the misalignment of suspension mounting points experienced during high cornering loads. The interior of the hollow shafts are carefully designed so that the bars are kept lightweight while providing the most rigid strength. The end result is the suspension performing at its intended optimal condition with the suspension geometry in tact.