| TECHNICAL SPECIFICATION | 
|---|
| Model ID | 
|---|
| Manufacturer (Make) | Kawasaki | 
| Model Name | KX450F | 
| 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 | Ø96.0 mm x 62.1 mm (Ø3.78 inches x 2.44 inches) | 
| Bore/Stroke Ratio | 1.55 | 
| Compression Ratio | 12.5:1 | 
| Valves per Cylinder | 4 | 
| Timing System | DOHC | 
| Fuel System(Carburetion) | Injection. 43mm Keihin Throttle body | 
| Ignition | Digital DC-CDI | 
| Cooling System | Liquid | 
| Powertrain | 
|---|
| Gearbox | 5 speed | 
| Transmission (Final Drive) | Chain | 
| Chassis/Suspension/Brakes | 
|---|
| Front Suspension | 48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in. | 
| Rear Suspension | UNI-TRAK® linkage system and Kayaba shock with 22-position low-speed and stepless high-speed compression dampening, 22-position rebound dampening and fully adjustable spring preload / 12.4 in. | 
| Front Brakes | Single disc | 
| Front Brakes Diameter | Ø250 mm (Ø9.84 inches) | 
| Rear Brakes | Single disc | 
| Rear Brakes Diameter | Ø240 mm (Ø9.45 inches) | 
| Front Tire | 90/80-21 | 
| Rear Tire | 120/80-19 | 
| Dimensions | 
|---|
| Overall Length | 2184 mm (85.98 inches) | 
| Overall Width | 820 mm (32.28 inches) | 
| Overall Height | 1280 mm (50.39 inches) | 
| Seat Height | 965 mm (37.99 inches) | 
| Fork Angle (Rake) | 26.7° degrees | 
| Trail | 117 mm (4.61 inches) | 
| Wheelbase | 1481 mm (58.31 inches) | 
| Ground Clearance | 340 mm (13.39 inches) | 
| Curb Weight | 112.1 kg (247 lb) | 
| Fuel Capacity  | 7.00 litres (1.85 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 | - |