Excellent CompatibilityThis 6″ Rear Axle Lowering Kit is ideal for 1999-2007 Classic 1/2 Ton Silverado GMC Sierra 6-Lug Wheel Trucks. Practical FunctionThis rear axle lowering kit is specially designed to increase the overall suspension travel of pickup trucks or trucks. It does an excellent job of quickly and conveniently keeping the rear of your truck below the typical height of 4-5 inches. Easy to OperateThis tool kit will help you quickly and safely change the position of the shaft without damaging other components. Please note that the fasteners, springs and U-bolts can be reused during manipulation. Excellent ConstructionMade of high-quality, durable steel and coated with a smooth black finish to prevent corrosion and rust, providing impact resistance and wear resistance. The C-Groove grooves are precisely machined to match the frame profile of 01-07 Chevy and GMC trucks (classic body style) for a tight fit, and they are completely bolt-on with no need.Packaging List1 x 6″ C-Groove Rear Axle Lowering KitView Details6″ C-Groove Rear Axle Lowering KitApplication1999-2006 – For Silverado 15001999-2007 – For GMC Sierra 15001999-2007 Classic 1/2 Ton – For Chevy Silverado GMC Sierra Trucks with 6-Lug Wheels6″ Rear Axle Lowering Kit – Helps keep the rear of your truck below the typical height of 4-5 inches.