quick view Add to Cart Whiteline Whiteline 19-20 BMW Z4 Front 24mm Heavy Duty Adjustable Swaybar - BTF99Z MSRP: $229.99 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... Add to Cart Add to Wish List Add to My Wish List Create New Wish List Compare