Comparison of Yamaha WR 450 F 2007 and Yamaha YZ450F 2010 [S]ave
| Attribute |  Yamaha YZ450F 2010 × |  Yamaha WR 450 F 2007 × |
|---|---|---|
| General | ||
| Production from (year) | 2010 | 2007 |
| Make | Yamaha | Yamaha |
| Model | Yamaha YZ450F | Yamaha WR 450 F |
| Category | Cross / motocross | Enduro / offroad |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Valves per cylinder | 4 | - |
| Fuel system | Injection. Fuel Injection (FI), Keihin® 44mm | - |
| Displacement (cm³) | 449 | 449 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 97 | 95 |
| Stroke (mm) | 60.8 | 63.4 |
| Gearbox | 5-speed | 5-speed |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) | Double Overhead Cams/Twin Cam (DOHC) |
| Ignition | TCI | CDI |
| Compression | 12.5:1 | 12.3:1 |
| Chassis | ||
| Front suspension | KYB® Speed-Sensitive System, inverted fork: fully adjustable, 12.2-in travel | Telescopic Fork, Coil spring/oil damper, 11.8´ |
| Rear suspension | KYB® Fully adjustable single shock; 12.4-in travel | Swingarm (link, suspension), Coil spring/gas-oil damper, 12.0´ |
| Front brakes | Single disc | Single disc |
| Rear brakes | Single disc | Single disc |
| Diameter (mm) | 245 | 245 |
| Front tyre | 80/100-21 | 80/80-M21 |
| Rear tyre | 120/80-19 | 110/90-M18 |
| Other | ||
| Color options |
| - |
| Dimensions | ||
| Wheelbase (mm) | 1,491 | 1,486 |
| Kerb weight (kg) | 111.1 | - |
| Dry weight (kg) | - | 112 |
| Overall height (mm) | 1,311 | 1,295 |
| Overall length (mm) | 2,192 | 2,174 |
| Overall width (mm) | 823 | 826 |
| Seat height (mm) | 998 | 978 |
| Ground clearance (mm) | 381 | 366 |
| Performance | ||
| Fuel capacity (l) | 6.05 | 7.94 |
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