The Koni STR.T (Orange) Shock is a high-performance shock absorber designed to provide superior handling and control for BMW 5 Series 6Cyl exc Wagon/540i V8 exc Wagon/M5/00+Sport Pkg (E39). This shock absorber features an adjustable rebound and compression rate, allowing drivers to customize the ride and performance of their vehicle. The shock is designed to improve handling, reduce body roll, and provide a more comfortable ride. It is also corrosion-resistant and features a durable orange finish.