Cusco Rear Anti Roll Bar - 19mm - Celica 140 ZZT230 & 190 T Sport ZZT231Cusco Rear Anti Roll Bar for Celica 140 ZZT230 & 190 T Sport ZZT231 19mm 174% Stiffer 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. Cusco anti roll bars come complete with bushes and brackets where neccessary.