At the heart of the 2005 Kawasaki KX 125 cross - motocross motorcycle, Kawasaki pairs a 124 cc (7.6 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 54.0 x 54.5 mm (2.1 x 2.1 inches) with a 11.1:1 compression ratio.
On the scales, the KX 125 measures 87.1 kg (192 lbs) dry. Rider ergonomics and chassis geometry center around a 945 mm (37.2 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,471 mm (57.9 in) wheelbase engineered for balanced agility and highway composure. The 8.32-liter (2.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 5 indexed model years from 1990 to 2006, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
945 mm (37.2 in)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Compression11.1:1
Bore x Stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Fuel SystemCarburettor. Mikuni TMX38x
IgnitionDigital CDI
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Chassis
Frame TypePerimeter style, high-tensile steel with aluminum subframe
Rake27.0°
Front SuspensionKayaba 48mm inverted telescopic
Front Travel300 mm (11.8 inches)
Rear SuspensionUNI-TRAK® swingarm, single shock
Rear Travel310 mm (12.2 inches)
Wheelbase1471 mm (57.9 inches)
Ground Clearance340 mm (13.4 inches)
Wheels & Brakes
Front Tyre80/90-M21
Rear Tyre100/90-M19
Front BrakesSingle disc. Hydraulic.
Rear BrakesSingle disc. Hydraulic.
Dimensions & Weight
Dry Weight87.1 kg (192.0 pounds)
Seat Height945 mm (37.2 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
