1999-2007 Silverado Lift Kit 2.5" 2WD Made in USA 'Road Fury' Steel Coil Spring Spacers (Set of 2) FITMENT: Chevrolet 1999-2006 Silverado Sierra 1500 6 lug 2WD; 2007 fits 'Classic' only KIT CONTENTS: 2 precision laser cut carbon steel spring spacers Spring Compressor may be needed; Installation Time: 2-3 hours BENEFITS: American Automotive's Road Fury Series represents the most badass steel leveling product in the US. It's built to impress. Road Fury bolt-on is easy to install and is guaranteed to outlast your truck. There are many cues, once received, that makes it superior to other product. You will be proud to place this on your truck. LIFT: Front suspension lift does not occur in a 1:1 ratio with spacer thickness Chevrolet 1999-2006 Silverado Sierra 1500 6 lug 2WD; 2007 fits &#039;Classic&#039; only GM 1999-2006 Sierra 1500 6 lug 2WD; 2007 fits &#039;Classic&#039; only 2 Precision Laser Cut Carbon Steel Spring Spacers Installation Instructions Front suspension lift does not occur in a 1:1 ratio with spacer thickness Spring Compressor may be needed Installation Time: 1-2 hours An alignment is recommended to ensure your ride quality