Comparison of Yamaha WR450F 2011 and Yamaha WR450F 2009 [S]ave
| Attribute |  Yamaha WR450F 2011 × |  Yamaha WR450F 2009 × |
|---|---|---|
| General | ||
| Production from (year) | 2011 | 2009 |
| Make | Yamaha | Yamaha |
| Model | Yamaha WR450F | Yamaha WR450F |
| Category | Enduro / offroad | Enduro / offroad |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor. Keihin FCR 39 | Carburettor. Keihin® FCR 39 |
| Engine details | Five titanium valves | - |
| Displacement (cm³) | 449 | 449 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 95 | 95 |
| Stroke (mm) | 63.4 | 63.4 |
| Gearbox | 5-speed | 5-speed |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) | Double Overhead Cams/Twin Cam (DOHC) |
| Ignition | CDI | CDI |
| Clutch | - | Wet, multiplate |
| Compression | 12.3:1 | 12.3:1 |
| Chassis | ||
| Front suspension | Inverted fork | Inverted fork |
| Rear suspension | Single shock | Single shock |
| Front brakes | Single disc. Wave | Single disc |
| Rear brakes | Single disc. Wave | Single disc |
| Diameter (mm) | 245 | 245 |
| Front tyre | 80/100-M21 | 80/80-M21 |
| Rear tyre | 110/100-M18 | 110/90-M18 |
| Front wheel travel (mm) | 300 | 300 |
| Rear wheel travel (mm) | 305 | 305 |
| Other | ||
| Starter | Electric | - |
| Color options |
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| Dimensions | ||
| Wheelbase (mm) | 1,486 | 1,486 |
| Kerb weight (kg) | 121.1 | 122.9 |
| Overall height (mm) | 1,300 | 1,295 |
| Overall length (mm) | 2,174 | 2,174 |
| Overall width (mm) | 826 | 826 |
| Seat height (mm) | 980 | 980 |
| Ground clearance (mm) | 366 | 366 |
| Performance | ||
| Fuel capacity (l) | 7.95 | 7.94 |
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