At the heart of the 2018 Kawasaki KX 100 cross - motocross motorcycle, Kawasaki features a 99 cc (6 cu in) liquid-cooled single cylinder, two-stroke configuration. Internal engine geometry specifies a bore and stroke of 52.5 x 45.8 mm (2.1 x 1.8 inches) with a 9.6:1 compression ratio.
On the scales, the KX 100 measures 71 kg (157 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 871 mm (34.3 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,290 mm (50.8 in) wheelbase engineered for quick, flickable steering geometry. The 5.68-liter (1.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kawasaki archive, this model family spans 12 indexed model years from 2005 to 2019, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
871 mm (34.3 in)
Engine
Displacement99.0 ccm (6.04 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsReed valve
Compression9.6:1
Bore x Stroke52.5 x 45.8 mm (2.1 x 1.8 inches)
Fuel SystemCarburettor. Keihin PWK28
IgnitionCDI with digital advance
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Chassis
Frame TypeHigh-tensile steel perimeter design with subframe member
Rake29.0°
Trail109 mm (4.3 inches)
Front Suspension36mm inverted telescopic cartridge fork with 18-way compression damping
Front Travel274 mm (10.8 inches)
Rear SuspensionUni-Trak single shock system with 4-way compression and 18-way rebound damping plus adjustable spring preload
Rear Travel274 mm (10.8 inches)
Wheelbase1290 mm (50.8 inches)
Ground Clearance381 mm (15.0 inches)
Wheels & Brakes
Front Tyre70/100-19
Rear Tyre90/100-16
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Weight incl.71.0 kg (156.5 pounds)
Seat Height871 mm (34.3 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.
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.
