Provides highly sought level stance. Includes pre-loaded coil for no-fuss installation High clearance crossmember design gives unmatched ground clearance. Requires no modification to the stock differential mounts, drivetrain or exhaust. 100% precision laser cut materials using the latest computer aided design process.Does NOT fit Auto Ride or Auto Leveling models. Does NOT fit models with electric steering. AWD models will require driveline modifications. (Must be converted to non-AWD). Minor cutting and drilling is required. 18" or larger wheels are required. Please view installation instructions for complete information on proper tire/wheel combinations.8-10 hourshttps://s3.amazonaws.com/roughcountry/install/92120800.pdf2007-2013:2WD:Chevy:Avalanche 1500;2007-2013:4WD:Chevy:Avalanche 1500