Skyjacker's Replacement Upper Control Arm (UCA) goes beyond just styling and elevates your performance level. Raising the suspension to run 33 Inch tires will add more ground clearance. This system integrates smoothly and functions perfectly allowing the CV axles to operate within limits of new UCA and OEM lower control arms. Aligns to OEM factory specifications. Retain your front GM OEM tuned performance shocks by utilizing top mounted Front Shock Extension Brackets. More than simple spacers, these durable 1-piece brackets add strength and integrity to the design. Replacement forged torsion keys with engineered specific indexing for year split applications are another key feature. Four (4) separate differential spacers securely reposition correct CV and driveshaft angles. A 2 Inch rear Block and U-bolt Kit delivers a more level stance. Complete with high-grade mounting hardware. Shocks are a key link in-between the chassis and the moving parts of your suspension. Skyjacker's ADX 2.0 Adventure Series Remote Reservoir Aluminum Monotube Rear Shocks deliver modern technology in the design with an innovative off-road race-inspired full-displaced valving system.