Kawasaki KX 100 - 2018 Specifications and Reviews

The 2018 Kawasaki KX 100 is a lightweight motocross bike designed for young and developing riders transitioning from smaller machines. Known for its responsive handling and manageable power delivery, it features a carburetted two-stroke engine with a compact 71kg frame that excels on tight tracks. The Uni-Trak suspension and aggressive geometry make it ideal for competitive youth racing and skill development.

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General information

CategoryCross / motocross
Year2018
ModelKawasaki KX 100

Engine and Transmission Specifications

Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
IgnitionCDI with digital advance
Fuel systemCarburettor. Keihin PWK28
Bore x Stroke52.5 x 45.8 mm (2.1 x 1.8 inches)
Compression9.6:1
Engine detailsReed valve
Engine typeSingle cylinder, two-stroke

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Front brakesSingle disc
Rear tyre90/100-16
Front tyre70/100-19
Rear wheel travel274 mm (10.8 inches)
Rear SuspensionUni-Trak single shock system with 4-way compression and 18-way rebound damping plus adjustable spring preload
Front wheel travel274 mm (10.8 inches)
Front Suspension36mm inverted telescopic cartridge fork with 18-way compression damping
Trail109 mm (4.3 inches)
Rake (fork angle)29.0°
Frame typeHigh-tensile steel perimeter design with subframe member
 
 

Physical measures and capacities

Fuel capacity5.68 litres (1.50 gallons)
Wheelbase1,290 mm (50.8 inches)
Ground clearance381 mm (15.0 inches)
Overall width765 mm (30.1 inches)
Overall length1,910 mm (75.2 inches)
Overall height1,151 mm (45.3 inches)
Seat height871 mm (34.3 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc71.0 kg (156.5 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterKick
Color optionsLime Green

Performance Profile & Rider Fit

Best For

Track75%
City5%
Cornering80%
Daily Riding10%
Touring5%
Passenger0%

Rider Profile

Best ForBest suited to younger or smaller riders with intermediate motocross experience progressing from a minicycle toward full-size bikes.
PurposeBuilt purely for closed-course motocross and off-road competition, not for street or general recreational riding.
Rider FitIts very low weight and compact seat height make it manageable for lighter or younger riders who would be overwhelmed by full-size motocross machines.
CharacterA high-revving two-stroke minicycle that rewards aggressive, active riding with sharp, flickable handling on the track.
Not Ideal ForNot suitable for taller or heavier adults, commuting, road use, or anyone seeking comfort and long-distance capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2018 Kawasaki KX 100 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 871mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with tip-toe one foot on the 2018 Kawasaki KX 100, with a cramped knee angle of around 75 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
64x64

MotorcycleDB Review

The 2018 Kawasaki KX 100 is a powerful and reliable motocross bike that is perfect for riders looking to take their skills to the next level. This bike features a liquid-cooled 99cc two-stroke engine that delivers impressive power and torque, making it ideal for tackling tough terrain. The lightweight chassis and adjustable suspension make it easy to handle, while the ergonomic design ensures maximum comfort for the rider. With its aggressive styling and advanced technology, the KX 100 is a top choice for motocross enthusiasts. Overall, the 2018 Kawasaki KX 100 is a top-notch motocross bike that offers exceptional performance and durability. Whether you're a seasoned rider or just getting started in the sport, this bike has everything you need to take on the track with confidence. Its combination of power, agility, and comfort make it a standout choice in the competitive motocross market.
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