Description: Reuse hardware, springs and U-bolt. CNC cut from 1/4″ steel plate and formed on a bending machine to ensure a good fit. Designed to use a lowering kit to increase overall pickup/truck suspension travel. Rear axle travel is limited. Fitment: For 1999-2006 Silverado 1500 For 1999-2007 GMC Sierra 1500 For 1999-2007 Chevy Silverado GMC Sierra Trucks with 6″ Classic 1/2 Ton Wheels Kit Includes: 1 x 6″ C-Clamp Notch Rear Axle Lowering Kit No Owner’s Manual;