Since the late 1960's, Bilstein equipped race vehicles have been dominating Baja and the desert racing circuits of the southwest. With over 30 years of off-road racing shock development, Bilstein has now produced the most technologically advanced shock absorber for lifted trucks and SUV's. Utilizing the single tube gas pressure concept, the 5100 Series are designed to enhance the ride and handling characteristics for lifted applications. The result is a smoother ride, increased control and durability for on and off-road use.