Eaz-Lift Screw-On Sway Control, Left-Mounted Driver Side (48381)

Tow Vehicle: 2013 Ford Expedition Trailer: 2015 Keystone Outback 7,427 lbs (9000 lbs GVWR) – 35′ LongI had towed my travel camper a few times using a load distribution hitch. At highway speeds, the trailer would sway occasionally and it was a bit unnerving. When tractor trailers passed, the sway was VERY noticeable and, a few times, my trucks anti-sway system engaged to keep it under control.I decided to add this anti sway bar as well as the 48380 (passenger side unit) to my set up based upon the length of my trailer. The welding mentioned in the instructions is required ONLY if the hitch on the tow vehicle does not have provisions for a sway bar set up; my load distribution hitch already had places to mount each of the sway balls so no welding was needed (If you are installing only one unit, you may want to consider part 48386 – a bolt on adapter that requires no welding).It is necessary to drill 6 – 11/32″ holes in the frame of the trailer to mount the sway ball plate. I was able to do this and install the ball plate with the hardware attached in about 15 minutes (per side).We took a 1500 mile trip with the trailer over 7 days and WHAT A DIFFERENCE! The only time I felt anything close to sway was when being passed from behind by a tractor trailer. When that occurred, the trailer and my truck were pulled GENTLY towards the passing truck but it was very easy to maintain control.Turning sharply to make right or left turns in city traffic does create a “creaking” noise; when riding on the highway, there is no noise at all.Some have commented that backing up is not possible with the sway bars attached. This is extremely dependent upon the application. I was able to back up with the both bars installed both with them tightened (engaged) and loose (disengaged) without issue. The instructions explain to verify that there will be no binding or over extension when moving the trailer into a “jack-knife” position and I verified this before backing and again, had no issue.I HIGHLY recommend this product. It has made a tremendous difference in the handling of my truck when towing and has made me feel much more comfortable towing my trailer. [...]