Kawasaki KX 125 - 2006 Specifications and Reviews

The 2006 Kawasaki KX 125 is a lightweight motocross bike designed for young riders and beginners entering competitive off-road racing. Its compact 124cc four-stroke engine delivers responsive power ideal for learning fundamental riding skills on the track. The KX 125 became legendary as the primary stepping stone motorcycle for aspiring professional motocross racers worldwide.

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General information

CategoryCross / motocross
Year2006
ModelKawasaki KX 125
 
 

Engine and Transmission Specifications

Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
IgnitionDigital CDI
Fuel controlOHV
Fuel systemCarburettor
Bore x stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression10.9:1
Torque26.50 Nm (2.7 kgf-m or 19.5 ft.lbs) @ 2700
Power40.49
Engine typeSingle cylinder, four-stroke
Capacity:124.00 ccm (7.57 cubic inches)

Brakes, suspension, Frame and wheels

Rear tyre dimensions100/90-M19
Front tyre dimensions80/100-M21
Rear suspension travel275 mm (10.8 inches)
Rear suspension310 mm
Front suspension travel275 mm (10.8 inches)
Front suspension300 mm
Rake (fork angle)27.0°
Frame typePerimeter, high-tensile steel

Physical measures and capacities

Fuel capacity8.20 litres (2.17 gallons)
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.
Power/weight ratio0.4654 HP/kg
Dry weight87.0 kg (191.8 pounds)

Other specs

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

Performance Profile & Rider Fit

40.5 hp
Peak Power

Best For

Track60%
City10%
Cornering90%
Daily Riding10%
Touring8%
Passenger5%

Rider Profile

Best ForThis bike suits experienced off-road riders who are comfortable with a tall seat, aggressive power delivery, and no electronic aids.
PurposeBuilt purely as a competition motocross machine for racing on dirt tracks, not as a street or all-purpose bike.
Rider FitDemands a fit, athletic rider able to stand on the pegs, shift body weight actively, and handle a firm, high suspension setup.
CharacterA raw, high-strung racing tool that rewards aggressive riding with sharp handling and explosive acceleration out of corners.
Not Ideal ForNot suitable for commuting, touring, passengers, or riders seeking comfort, low seat height, or road-legal usability.

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

Rider Fit Visualizer

2006 Kawasaki KX 125 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 2006 Kawasaki KX 125, 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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