KONI STR.T shocks in the 8250-series are orange, non-adjustable twin-tube gas-charged units listed for rear fitment on select BMW 5 Series six-cylinder and 540i V8 models (E39) excluding wagons and M5 or 2000+ sport package variants. They serve as direct replacement rear shocks intended to improve damping response over worn originals while retaining simple installation.
Koni STR.T (Orange) Shock BMW 5 Series 6Cyl exc Wagon/540i V8 exc Wagon/M5/00+Sport Pkg (E39) - Rear