This quality Upper Control Arm system for the Chevy Silverado 1500 and GMC Sierra 1500 4WD provides a 3in increased ride height over stock without creating suspension bind at full droop. Lift is accomplished with spacers that utilizes the factory coilover shocks for a stock ride. The Fabtech Upper Control Arms address the geometry of the front suspension with the new ride height for proper align-ability. Heavy duty ball joints allow for extended travel to eliminate binding. Due to the GM suspension geometry there are no differential drop brackets required for the CV axles to operate properly. This 3in system features the legendary stainless steel Dirt Logic 2.5 Coilover shocks. These Coilovers are built of the highest quality materials and will surpass all shocks in corrosion resistance due to the stainless steel body and NitroSteel piston rod. They will provide an outstanding ride quality both on and offroad. Rear lift comes from 1.5in blocks and u-bolts with Dirt Logic 2.25 shocks for a balanced ride. Dirt Logic shocks are the only stainless steel body shock on the market that provide maximum corrosion resistance in harshest conditions. Features: Increased ground clearance. Extended range upper ball joints provide a smooth quiet ride. Increased fender clearance compared to a Leveling Kit for 33in tall tires. Suspension can be restored to stock. Easy installation.