Yamaha YZ450F 2017 specs
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| Displacement | 449.0 ccm (27.40 cubic inches) |
| Engine Type | Single cylinder, four-stroke |
| Engine Details | Titanium-valves |
| Compression | 13.0:1 |
| Bore X Stroke | 97.0 x 60.9 mm (3.8 x 2.4 inches) |
| Valves Per Cylinder | 4 |
| Fuel System | Injection. Mikuni® fuel injection, 44mm |
| Ignition | TCI: Transistor Controlled Ignition |
| Lubrication System | Wet sump |
| Cooling System | Liquid |
| Gearbox | 5-speed |
| Transmission Type Final Drive | Chain (final drive) |
| Clutch | Multiplate wet clutch |
| Exhaust System | Aluminum muffler |
| Rear Brakes | Single disc. Hydraulic. |
| Rear Brakes Diameter | 245 mm (9.6 inches) |
| Rear Suspension | Monoshock, adjustable preload and rebound damping, 12.4 in travel |
| Rear Tyre | 120/80-19 |
| Rear Wheel Travel | 315 mm (12.4 inches) |
| Seat | Long, two-tone, motocross-style seat |
| Frame Type | Bilateral beam frame, aluminum |
| Front Brakes | Single disc. Hydraulic. |
| Front Brakes Diameter | 270 mm (10.6 inches) |
| Front Suspension | KYB speed-Sensitive System, inverted fork: fully adjustable |
| Front Tyre | 80/100-21 |
| Front Wheel Travel | 310 mm (12.2 inches) |
| Rake | 26.9° |
| Trail | 119 mm (4.7 inches) |
| Wheels | Dunlop® MX33® tyres |
| Seat Height | 965 mm (38.0 inches) If adjustable, lowest setting. |
| Weight Incl Oil Gas Etc | 111.1 kg (245.0 pounds) |
| Fuel Capacity | 7.57 litres (2.00 gallons) |
| Ground Clearance | 335 mm (13.2 inches) |
| Overall Height | 1,290 mm (50.8 inches) |
| Overall Length | 2,174 mm (85.6 inches) |
| Overall Width | 826 mm (32.5 inches) |
| Oil Capacity | 1.00 litres (1.06 US quarts) |
| Dry Weight | 99.3 kg (219.0 pounds) |
| Color Options | Team Yamaha Blue |
| Comments | Launch control. Power Tuner via smartphone. |
| Factory Warranty | 30 Day Limited Factory Warranty |
| Starter | Electric |
| Modifications Compared To Previous Model | New clutch lever and pushrod for more consistent clutch feel during long motos. |
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