Kawasaki KX450F - 2009 Specifications and Reviews

The 2009 Kawasaki KX450F is a competitive motocross machine designed for intermediate to advanced riders seeking a potent four-stroke platform. Its 449cc liquid-cooled single-cylinder engine delivers strong mid-range power and aggression on the track. Known for reliable performance and handling prowess, the KX450F establishes itself as a formidable competitor in the 450cc motocross class.

2009
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General information

CategoryCross / motocross
Year2009
ModelKawasaki KX450F

Engine and Transmission Specifications

Transmission type,final driveChain
Gearbox5-speed
Cooling systemLiquid
IgnitionDigital DC-CDI
Fuel controlDOHC
Fuel systemInjection. 43mm Keihin Throttle body
Valves per cylinder4
Bore x stroke96.0 x 62.1 mm (3.8 x 2.4 inches)
Compression12.5:1
Engine typeSingle cylinder, four-stroke
Capacity:449.00 ccm (27.40 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter240 mm (9.4 inches)
Rear brakesSingle disc
Front brakes diameter250 mm (9.8 inches)
Front brakesSingle disc
Rear tyre dimensions120/80-19
Front tyre dimensions90/80-21
Rear suspensionUNI-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 suspension48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in.
Trail117 mm (4.6 inches)
Rake (fork angle)26.7°
 
 

Physical measures and capacities

Fuel capacity7.00 litres (1.85 gallons)
Wheelbase1,481 mm (58.3 inches)
Ground clearance340 mm (13.4 inches)
Overall width820 mm (32.3 inches)
Overall length2,184 mm (86.0 inches)
Overall height1,280 mm (50.4 inches)
Seat height965 mm (38.0 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc112.1 kg (247.1 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsLime Green

Performance Profile & Rider Fit

Best For

Track60%
City5%
Cornering70%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a full-blown motocross machine best suited to experienced off-road or dirt track riders, not beginners or road riders.
PurposeBuilt purely for motocross competition and off-road jumping, cornering, and racing on dirt tracks.
Rider FitTall seat height, no passenger accommodation, and a stiff, high-effort riding position demand strong physical fitness and off-road riding skill.
CharacterLight, explosive, and razor-sharp handling define this bike, rewarding aggressive, committed riding over relaxed cruising.
Not Ideal ForNot suitable for street riding, commuting, touring, or carrying a passenger.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2009 Kawasaki KX450F Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 965mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2009 Kawasaki KX450F, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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