The Koni 1145 Sport Kit 01-06 BMW M3 (E46) Coupe/Conv is a suspension upgrade package designed to improve the handling and overall performance of BMW M3 (E46) Coupe and Convertible models. This kit includes four Koni Sport adjustable shocks, four Koni Sport adjustable struts, and four Koni Sport springs. The adjustable shocks and struts allow for a custom ride height and improved cornering capabilities, while the progressive-rate springs provide improved handling and a lower center of gravity. This kit is designed to provide improved handling, comfort, and performance for the BMW M3 (E46) Coupe/Convertible.