Motocross Bikes
2009Kawasaki KX 450F Monster Energy
31 fields on record
The 2009 Kawasaki KX 450 F Monster Energy is a competitive 449cc four-stroke motocross machine designed for intermediate to advanced riders seeking professional-level performance. Known for its potent liquid-cooled engine and responsive fuel injection, it delivers strong acceleration and handling characteristics ideal for both track racing and high-performance recreational riding. This lightweight, nimble bike excels in competitive motocross environments.
- Capacity
- 449.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Wet weight
- 112.1 kg
- Seat height
- 965 mm
- Power
- 44.9 HP (33.0 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for motocross racing and aggressive off-road riding on tracks and rough terrain, not for street use.
- Built for
- A raw, high-strung, race-bred machine that rewards aggressive input with explosive acceleration and razor-sharp handling over jumps and rough terrain.
- Not ideal for
- This is not suitable for commuting, touring, passengers, or riders wanting a comfortable, road-legal daily bike.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 449.0 ccm
- Power
- 44.9 HP (33.0 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.4005 HP/kg (wet)
- Bore x stroke
- 96.0 x 62.1 mm
- Compression
- 12.5:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Ignition
- Digital DC-CDI
- Valves per cylinder
- 4
- Torque
- Not on record - add it
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
Dimensions & weight
- Wheelbase
- 1481 mm
- Overall length
- 2184 mm
- Overall width
- 820 mm
- Seat height
- 965 mm
- Wet weight
- 112.1 kg
- Fuel capacity
- 7.00 litres
- Ground clearance
- 340 mm
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Steel, double-cradle with box-section single-tube backbone
- 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.
- Rake (fork angle)
- 26.7°
Brakes & wheels
- Front brakes
- Single disc. Two-piston calipers
- Front brakes diameter
- 250 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 240 mm
- Front tyre
- 90/80-21
- Rear tyre
- 120/80-19
Other
- Color options
- Ebony
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2009 | 2010 |
|---|---|---|
| Capacity | 449 cc | 449 cc |
| Seat height | 965 mm | 965 mm |
| Fuel capacity | 7 L | 7 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Kawasaki KX 450F Monster Energy?
The 2009 Kawasaki KX 450F Monster Energy has a Capacity of 449.0 ccm (27.40 cubic inches).
What engine power does the Kawasaki KX 450F Monster Energy have?
The 2009 Kawasaki KX 450F Monster Energy has a Power of 44.9 HP (33.0 kW).
How many gears does the Kawasaki KX 450F Monster Energy have?
The 2009 Kawasaki KX 450F Monster Energy has a Gearbox of 5-speed.
How much does the Kawasaki KX 450F Monster Energy weigh?
The 2009 Kawasaki KX 450F Monster Energy has a Wet weight of 112.1 kg (247.1 pounds).
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