Whiteline 08+ Subaru WRX Hatch / 08-09 Subaru STi Rear 22mm Swaybar-X heavy duty Blade adjustable (iEngineered 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 22mm 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