Bilstein 5100 Series Shocks are available with a monotube design for delivering a cooler and more efficient operation and a longer product life! The shocks feature the largest available piston diameter and guarantee superior handling and vehicle performance. The shocks' digressive valving will react to changing surface conditions instantly for maximized comfort and control, both on the road and off the road. The shocks also feature split compression and rebound valving which have been tuned specially for your specific vehicle application.