Bilstein Motorsport Series shocks and struts utilize Bilstein's gas-pressure technology for unparalleled race performance every time! The Motorsport Series shocks boast a durable monotube design for consistent, fade-free performance - ready to accommodate larger pistons with deflective disc valving. The struts feature increased oil and nitrogen chamber volume for optimal performance at high operating temps. Bilstein's Motorsport shocks and struts are offered with steel or aluminum construction and come specially sealed. What's more, your Motorsport Series shocks and struts are completely rebuildable and developed for use with any vehicle, from stock to NASCAR.