The 2009 MY YZ250F is the 4-stroke sibling of the acclaimed YZ250, and is a quarter-liter competition-grade bike which packs much more fun than meets the eye. New for this model year are the revised 13.5:1 compression and a new clutch design meant to provide lighter pulling and impeccable performance. Race-derive engine components and suspensions, premium controls and exhaust and many more similar details make the YZ250F a bike that's ready to start winning races right from the box.