Review on Air Lift 60821 1000 Spring by Derrek Fields

They were installed on a 2015 Ford Explorer Sport and as others have said their installation was a real bear. Fitting airbags into springs takes a lot of hard work and patience! Make sure you jack up the car and compress the springs as much as possible. I used a crowbar and channel locks to secure the packages in place (be careful not to puncture them!). Once the cushions were in place, hooking up the air ducts was pretty easy. Once installed, they certainly helped with towing. I had very little slack in the car while towing the Sea-Doos and the car loaded with gear and passengers. Another minor annoyance is that the instructions say the bags should weigh 3-5 pounds. psi even if you don't have a load to keep them in shape. In this mode, you will definitely hear them squeak at the rear from spring friction when driving at low speeds.