Bilstein Street Rod SS4 Series Chrome 36mm Monotube Shock AbsorberBilstein SS4 Series Shock Absorbers are designed specifically with custom street rods in mind using Bilstein's patented gas pressure technology. These 36mm monotube shocks are hand built to insure that top level quality is achieved with every shock that goes out the door. Each shock is tuned digressively using Bilstein's proven deflective disc valving technology and are available in two off the shelf settings as well as a custom setting. The body has