Cusco Type OS Rear Upper Strut Bar 2015-2021 Subaru Impreza WRX/STI / 2013-2017 CrosstrekCusco is a high performance Japanese suspension tuner that offers a Strut Tower Bar for a wide variety of Japanese vehicles. Just as other strut tower bars, it will reinforce the structural integrity of the vehicles chassis. This reinforcement will prevent chassis flexing under severe stress from hard cornering. By reducing chassis flexing, we are able to divert the cornering force to the springs and shocks, not the chassis. Now the springs and shocks