Go to "www.dynojet.com/atv/index.html" and click on "New Jet Kits" it will show the stock horse power to the wheels of different quads and the 400 is impressive when compared to the others.

 

I saw that and wondered how much horsepower had to do with atving verses torque. I wonder what the torque rating would be.
The horsepower shows to be a little more than most of the other 400cc plus bikes,only the 600 grizzly made a considerable amount more, real interesting.

 

The 400 had more hp than the 500 Sportsman ,500 King Quad and 450 Honda!Which was interesting and bumed me out.LOL