Not sure which 2011 Ford F-450/550 Suspension Systems are right for you? We have over 106 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Paul P from LIVINGSTON, TX said, "I Pull a 18K pound 5th wheel with my truck and the ride when empty with the stock Rancho shocks were harsh at best. After installing the Bilsteins both my wife and I noticed a difference. The ride was more analog vs. the digital ride of the stock Rancho shock."