Whiteline BSK007M Sway Bar for Impreza WRX and WRX STI Maximum Whiteline EVO X Front 27mm Heavy Duty Adjustable Swaybar ModBargains Whiteline 27mm Front Sway Bar 2015 2021 Subaru STI SubiSpeed Whiteline WL BSK009M Front and Rear Sway Bar Kit 04 06 Subaru Impreza Whiteline rear sway bar 22mm heavy duty blade adjustable Subaru Whiteline Rear Sway Bar 24mm Adjustable Subaru Models (inc. 2004 2007. Engineered to 'Activate More Grip', sway bars are principally designed to reduce body roll or sway. By reducing body roll, lateral loads are spread more evenly across the tires thereby increasing cornering grip and improving outright performance. This Whiteline 27mm 3 point adjustable sway bar = more grip = better handling = outright performance it's the best dollar for dollar handling improvement you can make to your vehicle. In fact, benefits extend to improvements in handling, safety and tire wear without affecting ride quality or comfort. Installation Instructions This Part Fits: Year Make Model Submodel 2004 2007 Subaru Impreza WRX STI