The Kayaba forks were great then and are still great now. We had a few problems with the 2000 YZ125 fork (we had to run a stiffer fork spring and lower oil height), but the YZ250 fork was flawless for most riders. Yamaha’s 2000 fork works better than last year’s fork, but better still, the Yamaha’s non-bladder fork is dialed in better than any of the current crop of bladder forks. Yamaha turned down Kayaba’s new bladder technology in favor of an improved version of last year’s fork. QUESTION NINE: HOW GOOD ARE THE NEW FORKS? Use the high-speed adjuster to set the bike’s fore/aft bias at speed. Notes: Yamaha’s high-speed compression clicker (the large dial) is very sensitive to adjustment. In no way does the new engine obsolete the old–but it is a seriously improved version of Yamaha’s current crop of usable, broad and predictable powerbands. The ‘00 engine is slightly better on the bottom, noticeably improved in the middle and a smidge better on top. While the 2000 Yamaha YZ250 is faster than the 1999 YZ, it’s still not an eye-watering, arm-dislocating, fence-post-blurring machine. Very good! QUESTION TWO: IS THE ‘00 ENGINE BETTER THAN THE ‘99? It has an acceptable power setting for almost every situation. How can that be? In a straight line, on the dyno or in the world of hill climbing, the 2000 YZ250 wouldn’t always sit on top of the throne, but if you toss in off camber corners, ruts, downhills and half-throttle situations, the YZ shines. This is not the fastest engine in the 250 class, but the YZ engine could be housed in the fastest bike. Yamaha has tapped into a secret that the other motorcycle manufacturers haven’t figure out–it’s not how much power you make, but how you make it.
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