Whiteline Anti Roll Bar - Rear 24mm - 3 Point Adjustable - GR YarisWhiteline Rear Anti Roll Bar GR Yaris Rear 24mm 3 Point Adjustable Complete with bushes, brackets, lateral locks and bushing grease Silver Sparkle II metallic powder coat colour 3 Year 60,000 km Warranty 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.