Designed to dominate the race track, the all new YFZ450R is sure to draw many checkered flags. With a "wide-track" chassis and new suspension, this new YFZ "R" will provide more stability, confidence and control than ever before. The powerful 5-valve 449cc race engine has been updated with fuel injection and a bunch of goodies from our YZ motocross bikes. This new engine is cradled by an all-new hybrid aluminum chassis for improved strength and reduced flex, making the new YFZ450R the most capable racer we've ever developed.