Cusco front lower arm bar, type 2 Legacy Turbo BL5 BP5, 684 477 A Cusco Bracing for Subaru Impreza WRX GV TOP END Motorsports Cusco Front Lower Arm Bar 2011 2014 Subaru Impreza WRX STi Sedan (Ver. 1) Evasive Motorsports: Cusco Lower Arm Bar Front Ver 1 Subaru WRX STI 15 21 Cusco Lower Arm Bar Type II Front GH GRB GVB Impreza WRX STi (Turbo. Cusco offers two versions of their front lower arm brace for your 2011 2014 Subaru Impreza WRX STi Sedan. They are constructed of high tension lightweight aluminum. The simple Type 1 brace bolts to the lower arm in 2 places and improves chassis rigidity dramatically. This is perfect for a street car that just needs an improvement over stock, but will not be overly stiff. The Type 2 connects in multiple places on the lower arm and is designed for maximum rigidity. This is great for cars that see a lot of track time and need the most possible chassis support. 2011 2014 Subaru Impreza WRX STi Sedan GVB GVF Lower Arm Bar Ver. 1 Cannot be used with Lower Arm Bar Ver. 2 as set