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| Model | Yamaha YZ450F |
| Year | 2017 |
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| Displacement | 449.7 ccm (27.44 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 | Double Overhead Cams/Twin Cam (DOHC) |
| Ignition | TCI: Transistor Controlled Ignition |
| Lubrication system | Wet sump |
| Cooling system | Liquid |
| Gearbox | 5-speed |
| Transmission type | Chain (final drive) |
| Clutch | Wet multi-disc |
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| Frame type | Semi double cradle |
| Rake (fork angle) | 28.0° |
| Front suspension | KYB Speed-Sensitive System, inverted fork: fully adjustable |
| Front wheel travel | 310 mm (12.2 inches) |
| Rear suspension | Monoshock, adjustable preload and rebound damping |
| Rear wheel travel | 315 mm (12.4 inches) |
| Front tire | 80/100-21 |
| Rear tire | 120/80-19 |
| Front brakes | Single disc. Hydraulic. |
| Diameter | 250 mm (9.8 inches) |
| Rear brakes | Single disc. Hydraulic. |
| Diameter | 245 mm (9.6 inches) |
| Seat | Long, two-tone, motocross-style seat |
| Weight incl. oil, gas, etc | 111.1 kg (245.0 pounds) |
| Seat height | 975 mm (38.4 inches) If adjustable, lowest setting. |
| Overall height | 1290 mm (50.8 inches) |
| Overall length | 2174 mm (85.6 inches) |
| Overall width | 826 mm (32.5 inches) |
| Ground clearance | 335 mm (13.2 inches) |
| Wheelbase | 1481 mm (58.3 inches) |
| Fuel capacity | 7.57 litres (2.00 US gallons) |
