Bilstein B6 4600 (Shock Absorber Conversion Kit) are specifically designed to eliminate rear original equipment Nivomat load leveling shock absorbers. Removing the Nivomat damper causes a significant reduction in rear spring rate. The B6 4600 (Shock Conversion Kit) includes (2) springs which will restore factory ride height. The kit includes (2) B6 4600 monotube shock absorbers which will provide a significant improvement in ride quality handling and comfort. B6 4600 shock absorbers utilize a unique velocity sensitive digressive piston which reacts to changing road conditions. The B6 4600 (Shock Absorber Conversion Kit) will offer a performance replacement for an OE Nivomat suspension systems.