I installed these on my 2015 F150 and they are great for stiffening the rear while towing our 31ft trailer. Even when I had our weight distribution hitch, the back of my truck squatted about 1.5 to 2 inches. After I install the Sumo Springs, it squats a maximum of 0.5 inches. The only thing I complain about is that when my truck is unloaded the ride gets a bit stiff like a 3/4 ton truck. It's not terrible, but the half-ton ride is much smoother. They are easy to detach and reattach before I tow my trailer. I highly recommend them for towing.
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