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Yamaha YZ450F - 2011 Specifications and Reviews

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General information

CategoryCross / motocross
Year2011
ModelYamaha YZ450F
 
 

Engine and Transmission Specifications

Transmission type,final driveChain
Gearbox5-speed
Cooling systemLiquid
Lubrication systemDry sump
IgnitionCDI
Fuel controlDOHC
Fuel systemInjection. Yamaha Fuel Injection (YFI), Keihin 44mm
Valves per cylinder4
Bore x stroke97.0 x 60.8 mm (3.8 x 2.4 inches)
Compression12.5:1
Engine detailsTitanium valves
Engine typeSingle cylinder, four-stroke
Capacity:449.00 ccm (27.40 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakes diameter245 mm (9.6 inches)
Rear brakesSingle disc
Front brakes diameter250 mm (9.8 inches)
Front brakesSingle disc
Rear tyre dimensions120/80-19
Front tyre dimensions80/100-21
Rear suspension travel315 mm (12.4 inches)
Rear suspensionKYB Fully adjustable single shock
Front suspensionKYB Speed-Sensitive System, inverted fork: fully adjustable, 12.2-in travel

Physical measures and capacities

Oil capacity1.20 litres (0.08 quarts)
Fuel capacity6.17 litres (1.63 gallons)
Wheelbase1,491 mm (58.7 inches)
Ground clearance381 mm (15.0 inches)
Overall width823 mm (32.4 inches)
Overall length2,192 mm (86.3 inches)
Overall height1,311 mm (51.6 inches)
Seat height998 mm (39.3 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc111.1 kg (245.0 pounds)

Other specs

LightDual 30W Krypton multireflector Headlights and 3.9/0.5W LED Brake light
Wheelbase1,270 mm (50.0 inches)
Rear tyre20/10-9
Front tyre21/7-10
Rear SuspensionCast aluminum swingarm w/piggyback High/Low speed compression, rebound and threaded preload adjustment, 11.0-in travel
Front SuspensionIndependent double wishbone, w/Kashima coated piggyback shocks, High/Low speed compression, rebound
Driveline2WD; Sealed O-Ring Chain, Eccentric Adjustment
Bore x Stroke95.0 x 63.4 mm (3.7 x 2.5 inches)
Compression11.6:1
ModelYamaha YFZ450X SE
Modifications compared to previous modelNew clutch lever and pushrod for more consistent clutch feel during long motos.
Color optionsWhite/Red, Team Yamaha Blue/White)
Factory warranty30 Day (Limited Factory Warranty)
StarterElectric

Rider Reviews

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