The Koni Special Active Shock Kit for BMW E60 5-Series 6cyl is a complete set of performance shocks designed to improve the handling and ride quality of your vehicle. It includes four Koni Special Active shocks, four bump stops, and four mounting brackets for easy installation. The shocks feature adjustable rebound and compression dampening, allowing you to tailor the ride to your exact needs. The kit also includes four adjustable height spring platforms, allowing you to fine-tune the ride height of your vehicle. This kit is designed to provide improved handling, better ride quality, and increased durability, making it an ideal choice for those looking to upgrade their suspension system.