We put 100lb on the packaging, however it was engineered with ruggedness in mind
Just for kicks, we hooked up a couple of Trail Tethers to the bumper of our F-350 and used them to tow our 5,500lb F-150. This put 916lb of force on each Trail Tether.
***DON'T TRY THIS AT HOME!!!!****
(But feel free to watch a video of us doing it on our insta page)