Cusco Lower Arm Bar 2002-2007 Subaru WRX Sedan, 2004-2007 WRX/STi, 2001-2007 Impreza WRX Wagon (Ver.2)The Cusco Lower Arm Bar provides all the same features as the Cusco Strut Tower Bar by connecting the front control arms or chassis. This reinforces the under body and reduces chassis flexing. 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 can do their jobs more effectively and efficiently. Cannot be used with Lower Arm Bar Ver. 1 as set 2001 2007 Subaru