| TECHNICAL SPECIFICATION |
|---|
| Model ID |
|---|
| Manufacturer (Make) | Yamaha |
| Model Name | YZ450F |
| Year | 2011 |
| Category(class) | Motocross / Dirtbike |
| Engine |
|---|
| Engine Capacity (Displacement) | 449 ccm (27.4 cubic inches) |
| Engine Type | Single cylinder, four-stroke |
| Bore x Stroke | Ø97.0 mm x 60.8 mm (Ø3.82 inches x 2.39 inches) |
| Bore/Stroke Ratio | 1.6 |
| Compression Ratio | 12.5:1 |
| Valves per Cylinder | 4 |
| Timing System | DOHC |
| Fuel System(Carburetion) | Injection. Yamaha Fuel Injection (YFI), Keihin 44mm |
| Ignition | CDI |
| Starter System | Electric |
| Lubrication System | Dry sump |
| Cooling System | Liquid |
| Powertrain |
|---|
| Gearbox | 5 speed |
| Transmission (Final Drive) | Chain |
| Chassis/Suspension/Brakes |
|---|
| 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 Brakes | Single disc |
| Front Brakes Diameter | Ø250 mm (Ø9.84 inches) |
| Rear Brakes | Single disc |
| Rear Brakes Diameter | Ø245 mm (Ø9.65 inches) |
| Front Tire | 80/100-21 |
| Rear Tire | 120/80-19 |
| Dimensions |
|---|
| Overall Length | 2192 mm (86.3 inches) |
| Overall Width | 823 mm (32.4 inches) |
| Overall Height | 1311 mm (51.61 inches) |
| Seat Height | 998 mm (39.29 inches) |
| Wheelbase | 1491 mm (58.7 inches) |
| Ground Clearance | 381 mm (15 inches) |
| Curb Weight | 111.1 kg (245 lb) |
| Fuel Capacity | 6.17 litres (1.63 gallons) |
| Performance |
|---|
| Top Speed | - |
| Acceleration (dart, speedup) time | |
| 0-100 km/h | - |
| 0-60 mph | - |
| 1/4 mile | - |
| 60 to 140 km/h, highest gear | - |
