If you're looking to convert the front end of your Chevy or GMC 2500HD or 3500 to dual shocks in the front, this it the kit that you need. This kit is designed to be used in conjunction with the CST 6-8" Lift Kit OR the CST 8-10" Lift Kit. You will need 4 aftermarket shocks to complete this kit (CST 2.0 Reservoir Shocks are available above for an additional charge and are of excellent quality.) The part number for this item is CSS-C5-7 and it is for 2011-2018 Chevy Silverado, GMC Sierra (2500HD, 3500 Models).