Cusco - Rear Anti Roll Bar - 18mm Adjustable - MR-S ZZW30Cusco Adjustable Rear Anti Roll Bar for MR S ZZW30 The fitting of larger sway bars has two main effects, vehicle balance in terms of understeer and oversteer, and increased roll resistance. Both of these can provide increased overall grip levels that can be achieved by the vehicle. The Cusco uprated anti roll bar is 18mm and is adjustable via 2 mountings. Adjustment 1 is 179% stiffer than the standard 15mm bar. Adjustment 2 is 260% stiffer than