Motocross Bikes

2005Kawasaki KX 125

36 fields on record

The 2005 Kawasaki KX 125 is a lightweight two-stroke motocross machine designed for amateur and intermediate riders stepping up from smaller displacement bikes. Known for its responsive 124cc power delivery and nimble handling characteristics, it excels in competitive amateur racing and recreational riding across varied terrain. The liquid-cooled engine and modern perimeter frame deliver predictable performance and durability.

Capacity: 124.0 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 87.1 kg
Seat height: 945 mm
Power: Not on record
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What’s new for the 2005 Kawasaki KX 125

vs the 2004

Spec	2004	2005
Power	41.0 HP (30.2 kW)	not listed
Fuel capacity	8.40 litres (2.22 US gallons)	8.30 litres (2.19 US gallons)
Front brakes	—	Single disc. Hydraulic.
Rear brakes	—	Single disc. Hydraulic.

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 2005 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
Torque: 26.5 Nm (2.7 kgf-m)
Engine type: Single, two-stroke
Bore x stroke: 54.0 x 54.5 mm
Compression: 11.1:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: CDI
Lubrication system: Petrol Mix (32:1)
Power: Not on record - add it

Transmission

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

Dimensions & weight

Wheelbase: 1471 mm
Overall length: 2150 mm
Overall width: 841 mm
Overall height: 1265 mm
Seat height: 945 mm
Dry weight: 87.1 kg
Fuel capacity: 8.30 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: 300 mm
Rear wheel travel: 310 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: 80/90-M21
Rear tyre: 100/90-M19

Other

Color options: Kawasaki Lime Green

Specs last verified against published sources: September 2026.

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	2005	2006
Capacity	124 cc	124 cc	124 cc	124 cc	124 cc	124 cc
Dry weight	87 kg	87 kg	87 kg	87 kg	87 kg	—
Seat height	945 mm	945 mm	945 mm	945 mm	945 mm	945 mm
Fuel capacity	8.5 L	8.5 L	8.5 L	8.4 L	8.3 L	8.2 L