Model:

Yamaha YZ450F

Year:

2011

Category:

Cross / motocross

Displacement:

449.00 ccm (27.40 cubic inches)

Engine type:

Single cylinder, four-stroke

Engine details:

Titanium valves

Compression:

12.5:1

Bore x stroke:

97.0 x 60.8 mm (3.8 x 2.4 inches)

Valves per cylinder:

4

Fuel system:

Injection. Yamaha Fuel Injection (YFI), Keihin 44mm

Fuel control:

DOHC

Ignition:

CDI

Lubrication system:

Dry sump

Cooling system:

Liquid

Gearbox:

5-speed

Transmission type,
final drive:

Chain

Front suspension:

KYB Speed-Sensitive System, inverted fork: fully adjustable, 12.2-in travel

Rear suspension:

KYB Fully adjustable single shock

Rear suspension travel:

315 mm (12.4 inches)

Front tyre dimensions:

80/100-21

Rear tyre dimensions:

120/80-19

Front brakes:

Single disc

Front brakes diameter:

250 mm (9.8 inches)

Rear brakes:

Single disc

Rear brakes diameter:

245 mm (9.6 inches)

Weight incl. oil, gas, etc:

111.1 kg (245.0 pounds)

Seat height:

998 mm (39.3 inches) If adjustable, lowest setting.

Overall height:

1,311 mm (51.6 inches)

Overall length:

2,192 mm (86.3 inches)

Overall width:

823 mm (32.4 inches)

Ground clearance:

381 mm (15.0 inches)

Wheelbase:

1,491 mm (58.7 inches)

Fuel capacity:

6.17 litres (1.63 gallons)

Oil capacity:

1.20 litres (0.08 quarts)

Starter:

Electric

Factory warranty:

30 Day (Limited Factory Warranty)

Color options:

White/Red, Team Yamaha Blue/White)

Modifications compared to previous model:

New clutch lever and pushrod for more consistent clutch feel during long motos.