This H&R sway bar kit is designed to improve the handling of your 1999-2005 BMW 3 series E46 cars. It includes a 27mm diameter front sway bar and a 21mm diameter rear sway bar, both made from high-quality steel for superior performance. The kit also includes mounts, bushings, and end links for a complete installation. This sway bar kit will reduce body roll and improve handling, giving your BMW a sportier feel.