This Ultra Racing front strut tower bar mounts between opposing front strut towers and reduces the flex that these towers experience during hard cornering. Reducing the flex will keep the wheels in position which allows the tires to gain maximum traction on the road. This will help improve traction when turning and increase turn-in response. Ultra Racing strut bar’s material is very carefully selected, this FSTB is constructed by steel plates with a thickness of 4mm – 5mm in order to provide strong brackets which have massive holding power, hence providing solid and responsive handling. Be cautious of other designs that use multiple connections in the bar itself. Many of the designs on the market for the Kia Optima have up to 7 bolted linkages in the load path and feature fasteners that are bolted into aluminum threads, resulting in a part that is little more than underhood jewelry. This FSTB is a solid one piece construction.