This H&R 01-06 BMW M3/M3 Cabrio E46 30mm Adj. 3 Hole Sway Bar - Front is a performance-enhancing suspension upgrade for the BMW E46 M3 and M3 Cabrio models. It features a 30mm adjustable 3-hole sway bar that is designed to minimize body roll and improve handling and stability. The bar is made from high-strength steel for maximum durability, and it is finished in a corrosion-resistant powder-coat finish for long-lasting good looks. Installation is simple and requires no special tools.