The Koni Special Active Shock Kit 06-11 BMW E90 325i/328i/330i Sedan (Excluding AWD) is a complete suspension upgrade kit designed to improve the handling and performance of your BMW E90. The kit includes four Koni Special Active shocks and four springs to provide improved control and stability. The shocks are adjustable, allowing for fine-tuning of the suspension to suit your driving style and conditions. The kit also includes mounting hardware and detailed installation instructions to make installation easy and straightforward. This kit is designed to provide a noticeable improvement in handling performance, and is a great choice for those looking to get the most out of their BMW E90.