2011 Yamaha YZ450F

The revolutionary YZ450F will have many gazing far into the future. By slanting the cylinder rearward and reversing the intake and exhaust ports, the YZ450F's mass is more centralized for amazing balance, unprecedented handling and cornering. The bilateral beam frame and suspension offer fantastic feedback to the rider. Add fuel injection to the mix of these innovations and you'll agree: backward is the right way forward.

GENERAL INFORMATION
MANUFACTURER	Yamaha
MODEL YEAR	2011
MODEL	YZ450F
DIMENSIONS
LENGTH	86.3 in.
HEIGHT	51.6 in.
WIDTH	32.4 in.
WEIGHT	245 lbs.
GROUND CLEARANCE	15 in.
WHEELBASE	58.7 in.
SEAT HEIGHT	39.3 in.
ENGINE
ENGINE	4-valve (titanium), DOHC, 4-stroke
DISPLACEMENT	449 cc
BORE X STROKE	97 x 60.8 mm
COMPRESSION RATIO	12.5:1
CARBURETION	Yamaha Fuel Injection (YFI), Keihin® 44 mm
FUEL CAPACITY	1.6 gal.
IGNITION	CDI
CLUTCH	Multi-plate wet
COOLING	Liquid
DRIVETRAIN
TRANSMISSION	Constant-mesh 5-speed
FINAL DRIVE	Chain
BRAKES/WHEELS/TIRES
BRAKES	Front: 250 mm hydraulic single disc Rear: 245 mm hydraulic single disc
TIRES	Front: 80/100-21-Dunlop® D-742FA Rear: 120/80-19-Dunlop® D-756
OPERATIONAL
SUSPENSION	Front: KYB® Speed-Sensitive System, inverted fork; fully adjustable; 12.2 in. travel Rear: KYB® fully adjustable single shock; 12.4 in. travel