Cusco 22mm 3-Way Adjustable Rear Sway Bar | Subaru Impreza WRX STI GDB(C) (04-07) (669 311 BJ22)

Often described as the single most aggressive suspension modification for your Impreza, the addition of stiffer swaybars properly distributes cornering forces by reducing lateral sway applying increased cornering force on the outside wheel and will ultimately increase vehicle turning characteristics. The rear sway bar will increase oversteer and allow the car to turn tighter, while the front sway bar will have the tendency to increase understeer.