Using the knowledge gained from winning more off-road races than any other major shock manufacturer, Bilstein introduces the 5150 Series. The first production monotube high gas pressure, fixed CrossFlow reservoir shock absorber designed specifically for lifted and custom applications. Race Inspired Fixed Crossflow Reservoir – Adjustable Shock Mount Allows Unlimited Reservoir Positioning – Advanced Design Split Valving – Huge 46mm Working Piston – Maintenance Free Design – Valving for Single or Multiple Shock Application – Platinum Powdercoat Finish – Available in 6.5" to 14" Travel