Motocross Bikes
2007Kawasaki KX450F
40 fields on record
The 2007 Kawasaki KX 450F is a competitive motocross machine designed for serious amateur and professional riders. Powered by a liquid-cooled 449cc four-stroke single-cylinder engine with advanced digital ignition, it delivers responsive performance suited to racing applications. Known for its lightweight chassis and reliable five-speed transmission, the KX 450F excels in off-road competition environments.
- Capacity
- 449.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 99.8 kg
- Seat height
- 965 mm
- Power
- 44.9 HP (33.0 kW)
What’s new for the 2007 Kawasaki KX450F
vs the 2006| Spec | 2006 | 2007 |
|---|---|---|
| Wet weight | 112.1 kg (247.1 pounds) | 113.6 kg (250.4 pounds) |
| Gearbox | 4-speed | 5-speed |
| Front suspension | 38mm leading axle, air-adjustable preload / 9.1 in. | 48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in. |
| Rear suspension | Uni-Trak® with Adjustable Preload, 22-Way (Low Speed)/ Stepless (High Speed) Compression Adjustment, 22-Way Rebound Damping Adjustment, Temperature Compensating Rebound Adjustment | UNI-TRAK® linkage system with 22-position low-speed and variable high-speed compression dampening, 22-position rebound dampening and fully adjustable spring preload / 12.4 in. |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for closed-course motocross racing and aggressive off-road riding, not general transportation.
- Built for
- A raw, high-strung, race-bred single-cylinder machine that rewards aggressive, committed riding with explosive acceleration and razor-sharp handling.
- Not ideal for
- Not suitable for commuting, touring, passengers, or riders seeking comfort and low-maintenance road use.
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
- 0.4499 HP/kg (dry)
- Bore x stroke
- 96.0 x 62.1 mm
- Compression
- 12.0:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- Multi-map digital CDI with throttle position sensor (K-TRIC)
- Valves per cylinder
- 4
- Lubrication system
- Forced lubrication, semi and #8209;dry sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet multi-disc
Dimensions & weight
- Wheelbase
- 1486 mm
- Overall length
- 2184 mm
- Overall width
- 820 mm
- Overall height
- 1280 mm
- Seat height
- 965 mm
- Dry weight
- 99.8 kg
- Wet weight
- 113.6 kg
- Fuel capacity
- 7.20 litres
- Ground clearance
- 345 mm
Chassis & suspension
- Frame
- Backbone frame, high-tensile steel
- 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 with 22-position low-speed and variable high-speed compression dampening, 22-position rebound dampening and fully adjustable spring preload / 12.4 in.
- Front wheel travel
- 315 mm
- Rear wheel travel
- 315 mm
- Rake (fork angle)
- 27.1°
- Trail
- 127 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 250 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 240 mm
- Front tyre
- 90/90-21
- Rear tyre
- 120/80-19
Other
- Color options
- Lime Green
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 | 2006 | 2007 | 2009 | 2012 | 2015 | 2018 |
|---|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc |
| Dry weight | 100 kg | 100 kg | 100 kg | 100 kg | 100 kg | 100 kg |
| Seat height | 965 mm | 965 mm | 965 mm | 955 mm | 955 mm | 950 mm |
| Fuel capacity | 7.2 L | 7.2 L | 7 L | 6.2 L | 6.2 L | 6.2 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 KX450F?
The 2007 Kawasaki KX450F has a Capacity of 449.0 ccm (27.40 cubic inches).
What engine power does the Kawasaki KX450F have?
The 2007 Kawasaki KX450F has a Power of 44.9 HP (33.0 kW).
How many gears does the Kawasaki KX450F have?
The 2007 Kawasaki KX450F has a Gearbox of 5-speed.
How much does the Kawasaki KX450F weigh?
The 2007 Kawasaki KX450F has a Dry weight of 99.8 kg (220.0 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
Please log in or register if you'd like to leave a comment.
Own one? Add it to My Garage and write an owner review with an Owner badge.