Conquer your daily driving adventures and tough off-road terrains with new control. Whether you are getting work done or towing to your next outdoor adventure, Skyjackers fully bolt-on 3.5-inch Lift with Replacement Upper Control Arms (UCA) goes beyond just styling into On-Road Refinement and Off-Road Readiness. Skyjacker fabricated the replacement UCA out of high weld strength, thick walled DOM steel tubing to withstand extreme amounts of stress and loads. For additional rigidity and strength, a welded gusset plate stiffens the arm and bushing eyelets into one. CNC machined bushing eyelets and ball joint cups ensure precise fitment. The steel encased OEM style rubber bushings deliver a quiet consistent controlled stability and smooth riding comfort. The greasable ball joint's full induction ball design, low friction bearing technology and other technical performance characteristics add longevity and increased strength. Engineered with built-in camber correction for improved handling and for proper front-end alignment. Aligns to OEM factory specifications. Proper suspension geometry ensures the Electric Stability Control (ESC) system functions within factory parameters. Retain your front GM OEM tuned performance shocks by utilizing a unique 1-piece top mount 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 relieve OEM component strains. These forged keys are stronger than OEM torsion keys and more durable than cast steel aftermarket keys. 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. This complete system integrates smoothly and functions perfectly allowing the CV axles to operate within limits of the new UCA and OEM lower control arm.