4 Wheels – Motorsport. 4 Wheels – Road Tuning. 2 Wheels – Motorcycle. Vauxhall Astra H Mk5 Inc VXR Whiteline Adjustable Rear ARB Anti-Roll Bar 24mm. Whiteline Performance Adjustable Anti-Roll Bars have been designed to reduce sway (body roll) and stabilise the vehicle under lateral (cornering) forces. Car manufacturers design the standard anti-roll bars to […]