"You got that backwards. " "Think of the 650R as the Z28 of dirtbikes. Tire frying torque, high top speed. Not very nimble." "Think of the 450X as the Evo VII of dirtbikes. Lots of revs, not a whole lot of torque" ?im really confused now? after riding a CRF450 I was amazed at how easily the front tire would pick up with just a twist of the throttel....im amazed that they get more torque outa the 650 than the 450.... Well, imagine it like this: The XR650 is a long-stroke, lower revving bike and the 450 is a short stroke high revving bike. The 650 makes power more like a diesel right off the bottom and there is no need to rev it much to haul ass. The 450 makes more power in the upper RPMs and less off the bottom. The 450 lifts the front wheel easily as it is a very powerful bike. 450cc in a little package is fast. The 450s I've ridden (Kawi, but not Honda) were powerful but still "pipe-y" like a two stroke. My 600, like the 650, drives more like a car. If you want the biggest torque of all, try a European market DR800. 800cc single cylinders are ALL torque. "O"