I can tell you that a yz250 is nowhere near 43 hp, but I did own a 97 yz250 with a PC pipe, KN filter, and a 38 PWK airstryker carb and I could eat up my buddies on there mildly modified banshee's a 450r all day long. That was on two wheels, but I'm guessing the blaster doesn't weigh a whole...