For this front kit, our engineers swapped out the OEM suspension for our double-bellow air springs, paired with threaded-body, monotube shocks. Air Lift Performance dampers are completely customizable to your needs, with 30 levels of adjustment in order for you to perfectly tailor your air suspension to your ideal performance setup. These elements work together to provide a comfortable ride and superior body support. All of these components combine to provide you with the ability to air out 112mm (4.4) from stock. As the leader in air suspension products for 70 years, Air Lift Company and its Performance division shows its commitment to delivering quality parts that last by torture-testing all of the major kit components on our in-house validation equipment. With a one-year, unlimited-mileage warranty not to mention the Air Lift Performance reputation for great customer service and technical support you can purchase this kit with peace of mind.