Yamaha YZ450F 2011 Specification
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| 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 |
| Chassis, suspension, brakes and wheels |
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| 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) |
| Physical measures and capacities |
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| 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) |
| Other specifications |
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| 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. |
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