Fox 2.0 performance series monotube rear shocks. Front shock spacer to maxmize droop travel with the upper arms. The Cognito Standard leveling Package is preconfigured with all of the standard components that we recommend and have preselected to properly level your 2WD/4WD GM 2500HD/3500HD truck.All Cognito Standard Packages consist of individual component boxes that together, include the necessary components to achieve a complete leveled system. Cognito leveling packages are compatible with specific vehicles based on precise "year, make, model and submodel" selections. Cognito Standard leveling Packages are pre-configured to achieve "level" vehicle rake (front-to-rear ride height), then we provide you with component options that allow you to change the rake angle, in addition to upgrade options such as: shocks, steering upgrades components, that are popular choices among our professional builders. We value your business and we are not satisfied until you are. Rudy's Performance Parts ships products from multiple warehouses across the country in order to get your products to you the quickest way possible. We are not able to send ANY race use products to the state of California. According to the EPA Clean Air Act, they are illegal for use on any Federal, State, or Local public highways and illegal use is punishable by the penalties enacted by the mentioned laws. Rudy's Performance Parts does not condone or promote illegal use of these products. All of our parts and accessories are returnable and refundable. The item in which you are returning MUST be unused, uninstalled, in the original condition, and in the original packaging. If you are returning an item due to an error caused by Rudys Performance Parts or its business partners i. If you are sending an item back, we recommend using a service with tracking and signature confirmation. This product is NOT for sale or use in California. The item "Cognito Leveling Kit 2011-2019 Chevy GMC Silverado Sierra 2500HD 3500HD 2WD/4WD" is in sale since Monday, October 14, 2019. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Suspension & Steering\Lift Kits & Parts". The seller is "rudys_performance_parts" and is located in Bakersfield, California. This item can be shipped to United States, Canada.