So i have a friend from school that I've been riding with a couple times with a 1999 YZ 250. He thinks that thing is the baddest bike on the block. He's been saying that it could take my dad's 86 XR 600R. Well . . . sounds possible. The YZ was putting out some good hp numbers and was about 50 pounds lighter than the XR, but the logic in me just can't see how a 600 would lose to a 250. Yeah it's a two stroke and it's definitly fast, but that's what those XR's were built to do, go fast in a straight line out in the desert. That's why they kicked ass out there. I've talked with my dad about this and he's calling BS. According to him he's out run dozens of 250 two strokes on everything from straight lines to straigh ups. What do you guys say? We'll have to find out hopefully this weekend who's BS or not.