The CST Mid-Travel Leveling Kit With 2.5" Adjust. Res. Shocks CSK-C27-1 adds suspension performance and height to your 2011-2019 GM 2500HD. The Mid-Travel Leveling Kit includes extended travel uni-ball upper arms, forged torsion keys, and front and rear 14-way adjustable 2.5 pro-series CST reservoir shocks. Provides a leveled stance.Â Featuring a 100% rebuildable design, the Pro-Series 2.5 Reservoir Shocks feature a 14-way adjustable external dial for quick adjustment to improve ride and handling both on and off-road. Built with a hard anodized finish for additional protection from the elements.Â CST Extended Travel Uni-Ball Upper Control Arms use a 1" uni-ball for increased movement with a stainless uni-ball taper pin. Designed to last, these Upper Control Arms feature replaceable urethane bushings and a closed uni-ball cup for protection of the joint. Works with CST or stock knuckles.Â Features:Â 1"-3" Leveling KitÂ Maintain OE Track Width Reduces Factory Rear Bed HopÂ Extended Travel, High-Clearance KitÂ Clears 35" Tires with 8" or 9" Wide WheelsÂ Front Res. Shocks Provide Additional Droop Travel All Parts Proudly Made In The USA!Â Notes: Works with CST or stock spindles. Machined and fabricated upper front res. mount included in kit.Â Externally bridge mounted piggy back rear.Â Front res. shocks provide additional droop. Add to CST 2wd spindles for additional height.