Take a step into the future with the Yamaha YZ450F Dirt Bike 2010. All new, the YZ450F boasts a rearward-slanted engine that offers amazing mass centralization, concentrating inertial mass toward the center of the bike. Trading the traditional intake and exhaust positions for a lightweight airbox and throttle body, this Yamaha dirt bike delivers more power and nimble handling. Also new is its aluminum Bilateral Beam frame, giving you awesome rigidity balance for superb cornering. Finishing it off is its revamped look, complete with sleek styling, which includes new front and rear fenders, intake cover, front fork protector, and number plate, and fuel tank and seat. The YZ450F starts in price from $7,990. Yamaha.