What category is the 2009 Kawasaki KX 450F?

General information
Category	Cross / motocross
Model	Kawasaki KX 450F
Year	2009

Engine and Transmission Specifications
Transmission typefinal drive	Chain
Gearbox	5-speed
Cooling system	Liquid
Ignition	Multi-map digital CDI with throttle position sensor (K-TRIC)
Fuel control	DOHC
Fuel system	Carburettor. Keihin FCR40
Bore x stroke	96.0 x 62.1 mm (3.8 x 2.4 inches)
Compression	12.0:1
Stroke	4
Engine type	Single cylinder
Capacity:	449.00 ccm (27.40 cubic inches)
Physical measures and capacities
Wheelbase	1,486 mm (58.5 inches)
Ground clearance	345 mm (13.6 inches)
Overall width	820 mm (32.3 inches)
Overall length	2,184 mm (86.0 inches)
Overall height	1,280 mm (50.4 inches)
Seat height	965 mm (38.0 inches) If adjustable, lowest setting.
Dry weight	99.8 kg (220.0 pounds)

Kawasaki KX 450F dimensions and frame
Rear brakes diameter	240 mm (9.4 inches)
Rear brakes	Single disc
Front brakes diameter	250 mm (9.8 inches)
Front brakes	Single disc
Rear tyre dimensions	120/80-19
Front tyre dimensions	90/90-21
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 suspension	48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in.
Rake (fork angle)	27.1°
Speed and acceleration
Color options	Lime Green
Fuel capacity	7.19 litres (1.90 gallons)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track95%

City5%

Cornering90%

Daily Riding10%

Touring5%

Passenger0%

Rider Profile

Best For	This is a full-power motocross machine best suited to experienced off-road or racing riders, not beginners.
Purpose	Built purely for closed-course motocross racing and aggressive off-road riding, not general transportation.
Rider Fit	Demands strong physical fitness and technique, with a tall 950mm seat height, kick start, and no seating comfort for extended riding.
Character	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.

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

Rider Fit Visualizer

2009 Kawasaki KX 450F Rider Ergonomics Assessment

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Units

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Feet:

At 965mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2009 Kawasaki KX 450F, 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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