I installed these shocks on a 2011 F250 Super Duty 4X4. The truck has 83,000 miles. The factory shocks were removed and had no rebound at all. The Monroe Gas Magnum changed the ride a lot. Rough roads often shake the truck and the rear seems to buckle. All of this disappeared with Monroe. I also installed these shocks on a previous Super Duty I had and they worked great. I just can't pull the trigger on a Bilstein set.