The Koni Special Active Shock FSD 03-10 BMW X3 (E83) Front Right is an adjustable shock absorber designed to provide improved handling and stability for the BMW X3 (E83). It is constructed with a special Active valve that allows for the damping force to be adjusted to the desired setting. This adjustable shock absorber features an internal floating piston that provides a progressive damping force, allowing for a smoother ride. It also features an adjustable rebound damping force, allowing for a more comfortable ride. This shock absorber also provides improved handling and stability, allowing for better cornering and braking performance.