Yamaha YZ450F 2011

Engine
Type        449cc liquid-cooled DOHC 4-stroke; 4 titanium valves
Bore x Stroke    97.0 x 60.8mm
Compression Ratio    12.5:1
Fuel Delivery    Yamaha Fuel Injection (YFI), Keihin® 44mm
Ignition    CDI
Transmission    Constant-mesh 5-speed; multiplate wet clutch
Final Drive    Chain Drive

Chassis
Suspension / Front    KYB® Speed-Sensitive System, inverted fork: fully adjustable, 12.2-in travel
Suspension / Rear    KYB® Fully adjustable single shock; 12.4-in travel
Brakes / Front    Hydraulic single disc brake, 250mm
Brakes / Rear    Hydraulic single disc brake, 245mm
Tires / Front    80/100-21-Dunlop® D-742FA
Tires / Rear    120/80-19-Dunlop® D-756

Dimensions
Length        86.3 in
Width        32.4 in
Height        51.6 in
Seat Height    39.3 in
Wheelbase    58.7 in
Ground Clearance    15.0 in
Fuel Capacity    1.63 gal
Wet Weight***    245 lb
Other
Warranty    30 Day (Limited Factory Warranty)