i haven't really pulled anything too heavy with my foreman but the cat although just a 250 has pulled a 12 ft trailer loaded with brush, a 20 foot wagon, 2wd nissan pickup, 140 farmall tractor. I guess the motor being in the back and super low range contributes to the cats pulling power but ive never had any problems with it. don't really know what these things weight but they're pretty heavy.