I always find it interesting when I teach myself something I already knew. Last week I switched on a set of Pro Taper Contours in the Windham bend, replacing a pair of Henry/Reed bends by the same maker. The effect of this swap was a surprise, to put it mildly. I set my son's bike up with a pair of these because of his size when we first got the bike, and never rode it with anything else on it. At the time, they seemed a little high for me. But, if you read my reviews of the bike from back around June/July of '06, I was impressed by how light and responsive the steering seemed, and how I could make the bike go more or less anywhere I wanted it to. Mine was never like that. Mine always pushed harder the his, and always steered more like my old '03 than his bike (reluctant to turn in, stands up in turns) and I haven't ridden his bike for any length of time since just before I got my '06, so I attributed the difference to all kinds of things, including faulting my memory of his bike. I never suspected the handlebars. I was wrong. The sensitivity of the aluminum framed YZ450 to small and seemingly insignificant changes in set up still surprises me after all this time. The Windham bend is 7mm higher, which I had thought would be helpful when standing for long periods during desert races. What I hadn't realized was that the way the bars are bent, they also move the hand position about 14-19mm farther forward. So as you might expect, the bars made it easier to stand and move around, but they also made it much easier to get farther forward on the bike without so much conscious effort, which helps cornering. But the bars did something else, too. Whether it was simply that they moved me forward, or that the steering inputs are farther forward, the steering is much lighter, more responsive and precise than with the other bars. The effect is similar, although not quite the same as installing offset clamps. Frankly, I am somewhat astounded by how much better the bike handles with this simple change. I've never had a bike so profoundly changed by a set of handlebars in all of my experience. The bike's response to mid turn corrections is vastly better than it was, as is the feedback and control I get when the front tire starts slipping. If your '06-'07 doesn't turn the way you want, try moving the bars up and forward 5 and 10mm or so. You might be surprised, too.