YAMAHAYZ450F 2008 - 2009

　　The YZ450F is the top-of-the-line competition bike, packing almost scary amounts of torque and top-end power to put a big grin on the faces of experienced riders. Often referred to as the ultimate step in motocross machines, the 2009 model year brings new camshafts, a shorty, lighter muffler and a new intake design for better performance across the whole rev range.

　　This model year also used a revised frame and a new 48mm fork. As for the rest, the YZ450F stands as one of the best packages in the business, with a beastly 449cc 5-valve, 4-stroke liquid-cooled mill generating all the dirt fun.