Air Lift Performance air spring suspension gives you maximum drop with superior handling, sharp steering response, and a comfortable ride. With a huge range of damping and height adjustability coupled with lightweight components (lighter than OEM suspension), you can't choose a more versatile lowering kit for your ride. Add the performance of the monotube dampers-for the best performance on both the track and the street-and Air Life Performance is the right suspension choice for your Focus.For the rear we swapped out the OEM suspension for our compact double bellows air spring mounted in the factory coil location. Proprietary lower control arms are designed for maximum drop and excellent cornering ability. Gloss black powdercoating on the control arms.As the leader in air suspension products for over 60 years, Air Lift Performance is committed to delivering quality parts that last. To ensure longevity for the customer, the key suspension components have been track-proven as well as tested on a durability rig for over one million cycles, which equates to 100,000 miles. 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.