Lowering Kit | 2 Inch FR | 4 Inch RR | Chevrolet Silverado/GMC Sierra 1500 | 1999-2006 | Rough Country | 722.2Ditch the Stock Look! Looking to give your ride a sportier, more aggressive look? Give your Chevy GMC a total transformation with Rough Country's2in 4in lowering Kit. The rear drop is adjustable between 4 inches and 4. 5 inches, so you can get the look you want. It can be fully realigned to factory specs, too! This all inclusive kit comes with everything you need to create a more streamlined, aerodynamic profile. Durable Components. Rough Country's 2