Motocross Bikes

2006Kawasaki KX 125

35 fields on record

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.

Capacity: 124.0 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: Not on record
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Seat height: 945 mm
Power: 40.5 HP (30.2 kW)

⇄ Compare with another bike All model years

What’s new for the 2006 Kawasaki KX 125

vs the 2005

Spec	2005	2006
Power	15.0 HP (11.0 kW)	40.5 HP (30.2 kW)
Torque	26.5 Nm (2.7 kgf-m or 19.5 ft.lbs)	26.5 Nm (2.7 kgf-m or 19.5 ft.lbs) @ 10500 RPM
Dry weight	87.1 kg (192.0 pounds)	not listed
Fuel capacity	8.30 litres (2.19 US gallons)	8.20 litres (2.17 US gallons)
Front suspension	Kayaba 48mm inverted telescopic	300 mm
Rear suspension	UNI-TRAKÂ® swingarm, single shock	310 mm
Compression	11.1:1	10.9:1

Other years 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail97%

Cornering90%

City riding10%

Daily riding10%

Touring8%

Two-up5%

Track60%

Best for: Built purely as a competition motocross machine for racing on dirt tracks, not as a street or all-purpose bike.
Built for: A raw, high-strung racing tool that rewards aggressive riding with sharp handling and explosive acceleration out of corners.
Not ideal for: Not suitable for commuting, touring, passengers, or riders seeking comfort, low seat height, or road-legal usability.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 945mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2006 Kawasaki KX 125, with a cramped knee angle of around 85 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

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Full specifications

Engine

Capacity: 124.0 ccm
Power: 40.5 HP (30.2 kW)
Torque: 26.5 Nm (2.7 kgf-m) @ 10500 RPM
Engine type: Single, two-stroke
Bore x stroke: 54.0 x 54.5 mm
Compression: 10.9:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: CDI
Lubrication system: Petrol Mix (32:1)

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain

Dimensions & weight

Wheelbase: 1470 mm
Overall length: 2165 mm
Overall width: 815 mm
Overall height: 1265 mm
Seat height: 945 mm
Fuel capacity: 8.20 litres
Ground clearance: 340 mm
Dry weight: Not on record - add it

Chassis & suspension

Frame: Perimeter, high-tensile steel
Front suspension: 300 mm
Rear suspension: 310 mm
Front wheel travel: 275 mm
Rear wheel travel: 275 mm
Rake (fork angle): 27.0°
Trail: 111 mm

Brakes & wheels

Front brakes: Single disc. Hydraulic.
Front brakes diameter: 220 mm
Rear brakes: Single disc. Hydraulic.
Rear brakes diameter: 190 mm
Front tyre: 80/100-M21
Rear tyre: 100/90-M19

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	1990	1994	1998	2002	2006
Capacity	124 cc	124 cc	124 cc	124 cc	124 cc
Dry weight	87 kg	87 kg	87 kg	87 kg	—
Seat height	945 mm	945 mm	945 mm	945 mm	945 mm
Fuel capacity	8.5 L	8.5 L	8.5 L	8.4 L	8.2 L