Kawasaki KX 250 - 1990 Specifications and Reviews

The 1990 Kawasaki KX 250 is a lightweight motocross machine built for competitive riders and enthusiasts seeking a nimble, responsive 2-stroke performer. Its liquid-cooled 249cc engine delivers strong low-to-mid range power ideal for technical terrain and racing. Known for its aggressive handling and high-revving character, the KX 250 remains a popular choice for serious motocross competition.

5 stars Average rating: 5 from 2 votes
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General information

CategoryCross / motocross
Year1990
ModelKawasaki KX 250
 
 

Engine and Transmission Specifications

Gearbox5-speed
Cooling systemLiquid
StarterKick
IgnitionCDI
Fuel systemCarburettor
Bore x stroke67.4 x 70.0 mm (2.7 x 2.8 inches)
Torque47.50
Power52.50
Stroke2
Engine typeSingle cylinder
Capacity:249.00 ccm (15.19 cubic inches)

Physical measures and capacities

Wheelbase1,480 mm (58.3 inches)
Ground clearance385 mm (15.2 inches)
Overall width815 mm (32.1 inches)
Overall length2,177 mm (85.7 inches)
Overall height1,215 mm (47.8 inches)
Dry weight96.5 kg (212.7 pounds)
 
 

Kawasaki KX 250 dimensions and frame

Rear brakes diameter190 mm (7.5 inches)
Rear brakesSingle disc
Front brakes diameter220 mm (8.7 inches)
Front brakesSingle disc
Rear tyre dimensions110/90-19 62
Front tyre dimensions80/100-21 51
Rear suspension travel330 mm (13.0 inches)
Rear suspensionMonoshock
Front suspension travel310 mm (12.2 inches)
Front suspensionInverted Forks
Trail113 mm (4.4 inches)
Rake (fork angle)26.5°

Speed and acceleration

Power/weight ratio0.5440 HP/kg

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity8.50 litres (2.25 gallons)

Performance Profile & Rider Fit

Best For

Track90%
City10%
Cornering85%
Daily Riding10%
Touring8%
Passenger0%

Rider Profile

Best ForThis is a competition-focused 250cc two-stroke motocrosser best suited to experienced or advanced off-road riders, not beginners.
PurposeBuilt purely for closed-course motocross racing and aggressive off-road riding, not for street use or transportation.
Rider FitIts tall seat height, minimal weight, and race-tuned suspension demand strong physical fitness, good bike control, and confidence standing on the pegs.
CharacterA light, high-revving, aggressive machine that rewards an active, attacking riding style with explosive acceleration out of corners and razor-sharp handling.
Not Ideal ForNot suitable for commuting, touring, carrying passengers, or riders seeking comfort and low-maintenance street usability.

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

Rider Reviews

Total comments: 1
64x64

MotorcycleDB Review

The 1990 Kawasaki KX 250 is a powerful and reliable dirt bike that has stood the test of time. With its strong engine and durable frame, it's no wonder that this bike is still highly sought after by motocross enthusiasts. The smooth handling and responsive suspension make it a joy to ride on the track or trails, and its overall performance continues to impress riders decades after its release. One of the standout features of the 1990 Kawasaki KX 250 is its exceptional power delivery, which allows for quick acceleration and impressive top speed. The bike's sturdy construction and well-designed components make it a reliable choice for riders of all skill levels. With its timeless design and outstanding performance, the 1990 Kawasaki KX 250 remains a standout choice for motocross riders looking for a vintage bike that can still compete with modern models.
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