Bilstein Coil-Over Kit - 2.5 in ID Spring - 2 in Shock - 7 in Sleeve - Aluminum - Black Anodized - 6100 / 7100 Series Shocks - Kit-B4-BOA-0000117--Notes: THESE WILL ALSO WORK ON ALL SN SERIES SHOCKS PER BILSTEIN State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO