| TECHNICAL SPECIFICATION |
|---|
| Model ID |
|---|
| Manufacturer (Make) | Yamaha |
| Model Name | YZ450F |
| Year | 2009 |
| Category(class) | Motocross / Dirtbike |
| Engine |
|---|
| Engine Capacity (Displacement) | 449 ccm (27.4 cubic inches) |
| Engine Type | Single cylinder, four-stroke |
| Bore x Stroke | Ø95.0 mm x 63.4 mm (Ø3.74 inches x 2.5 inches) |
| Bore/Stroke Ratio | 1.5 |
| Compression Ratio | 12.3:1 |
| Valves per Cylinder | 5 |
| Timing System | DOHC |
| Fuel System(Carburetion) | Carburettor. Keihin FCR MX39 |
| Ignition | CDI |
| Cooling System | Liquid |
| Powertrain |
|---|
| Gearbox | 5 speed |
| Transmission (Final Drive) | Chain |
| Chassis/Suspension/Brakes |
|---|
| Front Suspension | Speed-Sensitive System inverted fork |
| Front Suspension Travel | 300 mm (11.81 inches) |
| Rear Suspension | Fully adjustable single shock |
| Rear Suspension Travel | 312 mm (12.28 inches) |
| Front Brakes | Single disc |
| Front Brakes Diameter | Ø245 mm (Ø9.65 inches) |
| Rear Brakes | Single disc |
| Rear Brakes Diameter | Ø245 mm (Ø9.65 inches) |
| Front Tire | 80/80-21 |
| Rear Tire | 120/80-19 |
| Dimensions |
|---|
| Overall Length | 2195 mm (86.42 inches) |
| Overall Width | 826 mm (32.52 inches) |
| Overall Height | 1306 mm (51.42 inches) |
| Seat Height | 988 mm (38.9 inches) |
| Wheelbase | 1494 mm (58.82 inches) |
| Ground Clearance | 373 mm (14.69 inches) |
| Curb Weight | 108.0 kg (238 lb) |
| Fuel Capacity | 6.81 litres (1.8 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 | - |
