The H&R 00-05 BMW 323i Sport Wagon/325i Sport Wagon E46 Sport Spring is designed to provide a sportier ride and improved handling for your BMW. It is a progressive rate spring that is designed to reduce body roll and improve cornering stability. The spring is made from high quality materials and is designed to provide a comfortable ride while still providing improved performance. It also provides a lower center of gravity which helps to improve cornering ability and reduce body roll. The spring is also designed to provide a more aggressive look to your BMW.