1999-2006 Chevy GMC 1500 Truck Rear Lowering Drop Shackles Fits: 1999 - 2006 Chevy Silverado / GMC Sierra 1500 PU Truck Can Be Installed On Both 2 & 4 Wheel Drive Trucks Premium Urethane Bushings w/ Grease Zerks Powder Coated For Life Long Durabililty Lifetime Warranty, Made In USA