My 02 Tb will run right along side a Big Bear, which tops out at about 50. I have dragged a SP 400 , and I burned him on takeoff,but he came back and beat me, but not by much. Keep in mind, all of this was when my TB was stock. Since then I have added Aaen muffler, K&N filter, Aaen green primary clutch spring, and went up 2 sizes on the main jet. I havent really had a chance to get it out much since I put the mods on, but from what I can tell just playing around in the yard, it has quite a bit more power. The 13.1 horse is probably about right stock because I think a stock Warrior has 18 HP, and a Warrior is plenty more powerful then a TB. Don't get me wrong, I really like my TB. It was my first quad and I think I got the best quad for the money, except for maybe the Trailblazer. The only reason I didn't buy the Trailblazer is bacause I thought the 250 was to small for me.(230lbs)