2010 Yamaha YZ250F explained
Yamaha has released a video explaining the modifications done to their quarter-liter motocrosser of latest generation, the YZ250F. The bike now features a bilateral beam frame, while the engine now benefits of new valve train, carburetor and exhaust.
Overall, the new 2010 Yamaha YZ250F is supposed to offer a new riding position, handle sharper and deliver a more power with less noise. Sounds tempting to me!