Motocross Bikes

2004Kawasaki KX125

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The 2004 Kawasaki KX 125 is a lightweight two-stroke enduro bike designed for intermediate to advanced off-road riders. Known for its agile handling and responsive power delivery, this 124cc machine excels in competitive motocross and trail riding. Its liquid-cooled engine and six-speed transmission provide excellent control across varied terrain.

Capacity: 124.0 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 87.0 kg
Seat height: 945 mm
Power: 41.0 HP (30.2 kW)

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What’s new for the 2004 Kawasaki KX125

vs the 2003

Spec	2003	2004
Power	39.7 HP (29.2 kW)	41.0 HP (30.2 kW)
Torque	—	26.5 Nm (2.7 kgf-m or 19.5 ft.lbs)
Front suspension	—	Kayaba 48mm inverted telescopic
Rear suspension	—	UNI-TRAK® swingarm, single shock
Front brakes	Single disc	not listed
Rear brakes	Single disc	not listed
Compression	—	11.1:1

Other years 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

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 2004 Kawasaki KX125, 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 →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 124.0 ccm
Power: 41.0 HP (30.2 kW)
Torque: 26.5 Nm (2.7 kgf-m)
Engine type: Single, two-stroke
Power/weight ratio: 0.4713 HP/kg (dry)
Bore x stroke: 55.0 x 54.5 mm
Compression: 11.1:1
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: 1458 mm
Overall length: 2150 mm
Overall width: 828 mm
Overall height: 1240 mm
Seat height: 945 mm
Dry weight: 87.0 kg
Fuel capacity: 8.40 litres
Ground clearance: 340 mm

Chassis & suspension

Frame: Perimeter style, high-tensile steel with aluminum subframe
Front suspension: Kayaba 48mm inverted telescopic
Rear suspension: UNI-TRAK® swingarm, single shock
Front wheel travel: 305 mm
Rear wheel travel: 310 mm
Rake (fork angle): 27.0°
Trail: 111 mm

Brakes & wheels

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

Other

Color options: Lime green

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	1995	2000	2004	2009
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