The Bilstein B6 4600 Series heavy-duty gas pressure shock absorber is designed specifically for stock-height trucks and SUVs. It features a 46mm monotube design which provides consistent, fade-free performance. The velocity-sensitive, digressive piston reacts to changing road conditions to provide superior comfort and control. This product is an excellent upgrade for vehicles used for towing or off-road use while maintaining a smooth street ride. Items included in the package: 1 x Rear Shock Absorber (Part Number: 24-186933), Installation hardware (Washers, Bushings, Nuts). Note: Professional installation is recommended.