Here are some of the things I have towed with my B2200 recently, its a stock EFI 5 speed model with a cold air intake.
This is me pulling a Kawasaki Ultra 300X.
This is me with a 2013 Arctic Cat XF1100 Turbo mostly in the back, its 850lb by itself and has over double the horsepower of my truck at 240hp lol.
This is me with a Kawasaki 450 race quad in the box, and pulling a Kawasaki Mule 4X4 on the trailer, in the snow/ice.
I also had 2 adventure bikes (Triumph Explorer & Moto Guzzi Selvito) at 600+lbs each in the trailer, and 2 dirt bikes in the truck. I could feel I had some weight there lol, made me laugh thinking that each bike on the trailer had more hp than my truck.