I raced my friends new Polaris 850XP sportsman this weekend and I have to tell you these things are fast. My 700xx is stock vs his completely stock 850 it was a very even race but I seamed to pull a couple quad lengths in the end to beat him. For an 800lb 4x4 utility quad I was truly amazed at how fast it is. Polaris says that the 850xp has 77hp. Now Polaris is releasing a Scrambler 850. I don't think I would want to race one of these.