The Koni Special Active Shock Kit 99-05 Volkswagen Jetta IV 4 cyl Gas & TDI (Excluding Wagon) is a performance suspension upgrade for the Volkswagen Jetta IV. This kit includes Koni Special Active shocks that are designed to provide improved handling, cornering, and stability. The shocks are adjustable with a knob that allows you to fine-tune the dampening to your driving style. The kit also includes Koni Sport Springs that lower the vehicle's center of gravity, allowing for better cornering and improved handling. This kit is designed specifically for the 99-05 Volkswagen Jetta IV 4 cyl Gas & TDI (Excluding Wagon) and is a great way to upgrade your suspension for better performance.