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. Details: Series: B6 4600 Internal Design:Monotube Finish: Yellow Paint Adjustable: Non-Adjustable Body Design: Smooth Body (Non-Coilover) Boot Included:Blue Straight Pistion Diameter: 46mm Postion: Rear Reservior: No Shaft Diameter: 14mm Notes: Without Electronic Suspension Use to convert vehicles with Nivomat leveling suspension to standard coil spring suspension Applications: Cadillac Escalade ESV 2006-2003, Escalade EXT 2006-2002, Chevrolet Avalanche 1500 2006-2002, Suburban 1500 2006-2000, GMC Yukon XL 1500 2006-2000 Warranty: Limited Lifetime Warranty