Kawasaki KX125 - 2009 Specifications and Reviews

The 2009 Kawasaki KX125 is a lightweight 2-stroke motocross bike designed for amateur and intermediate riders. Known for its agile handling and responsive power delivery, the 124cc single-cylinder engine delivers spirited performance in a nimble package. Its approachable character and relatively low weight make it ideal for developing riding skills on the track.

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General information

CategoryCross / motocross
Year2009
ModelKawasaki KX125

Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox6-speed
Cooling systemLiquid
StarterKick
IgnitionDigital CDI
Fuel systemCarburettor. Mikuni TMX38x
Bore x stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression9.1:1
Stroke2
Engine typeSingle cylinder
Capacity:124.00 ccm (7.57 cubic inches)
 
 

Physical measures and capacities

Wheelbase1,470 mm (57.9 inches)
Overall width815 mm (32.1 inches)
Overall length2,165 mm (85.2 inches)
Overall height1,265 mm (49.8 inches)
Seat height945 mm (37.2 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc87.0 kg (191.8 pounds)

Kawasaki KX125 dimensions and frame

Rear brakes diameter240 mm (9.4 inches)
Rear brakesSingle disc
Front brakes diameter250 mm (9.8 inches)
Front brakesSingle disc. Two-piston calipers
Rear tyre dimensions100/90-19
Front tyre dimensions80/100-21
Rear suspensionUNI-TRAK® single shock system with 4-way compression and 18-way rebound damping plus adjustable spring preload / 10.8 in.
Front suspension36mm inverted telescopic cartridge fork with 18-way compression damping / 10.8 in.
Trail113 mm (4.4 inches)
Rake (fork angle)27.0°
Frame typeHigh-tensile steel perimeter design with subframe member

Speed and acceleration

Color optionsLime Green
Fuel capacity8.20 litres (2.17 gallons)
 
 

Other specs

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

Performance Profile & Rider Fit

Best For

Track90%
City5%
Cornering88%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a full-blown 125cc two-stroke motocross weapon best suited to experienced or committed intermediate riders comfortable with a peaky powerband and no electric start.
PurposeBuilt purely for closed-course motocross racing and track riding, not for any form of street or commuter use.
Rider FitThe tall 945mm seat height, aggressive ergonomics, and demanding two-stroke power delivery favor a fit, skilled rider who can stand and work the bike actively over rough terrain.
CharacterA light, explosive, high-revving two-stroke that rewards aggressive riding, precise clutch work, and confident throttle control with razor-sharp handling and rapid direction changes.
Not Ideal ForThis is not a bike for beginners, commuters, passengers, or anyone wanting comfort, storage, lights, or road-legal touring capability.

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

Rider Fit Visualizer

2009 Kawasaki KX125 Rider Ergonomics Assessment

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

Feet:

At 945mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2009 Kawasaki KX125, 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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