Maintains factory ride quality Increased ground clearance Easy bolt-on installation Levels the front with the rear of the vehicle No need to disassemble your struts to installDoes NOT fit Auto Ride or Auto Leveling models.1 - 3 hourshttps://s3.amazonaws.com/roughcountry/install/92020700.pdf2007-2013:2WD:Chevy:Avalanche 1500;2007-2013:4WD:Chevy:Avalanche 1500