AS3 Series - Suspension Shock AbsorberBilstein AS3 Series shock absorbers are developed to deliver superior damping characteristics with virtually no rod pressure build up. Based on Bilsteins race proven 46mm monotube design, the AS3s unique piggyback nitrogen chamber delivers a fade free performance without the gas pressure buildup thats common in conventional shock designs. The aluminum threaded body modular assembly with single adjustable shaft tuning is purchased as a dry kit with