I bought this damper to replace the original damper on my Ford E450 Minnie Winnie 26A and it took 15 minutes to install after the old one removed came, instructions included Adjust the wheels to the left and that made a huge difference when I rode it on a windy day. I originally ordered a $250 Roadmaster shock but ran out of stock. This Bilstien damper did the job for half the price and was a lot easier to install.