English
Lietuvių
Latviešu
Eesti
Polski
Русский
Українська
Deutsch
Nederlands
Čeština
Slovenčina
Svenska
Norsk
Dansk
Suomi
Kawasaki KX 250: two-strokes and four-strokes cross motorcycles
Kawasaki KX 250 — a cross (motocross) motorcycle that has been in production since 1974. In this article, we review the two-strokes and four-strokes, who they're suited to, and what to check when buying a used cross motorcycle.
KX 250 in brief
The KX 250 is designed for tracks, not roads: it's a racing cross motorcycle. It's lightweight, has a long-travel suspension, and an aggressive engine, making it unsuitable for daily commuting on public roads.
These motorcycles are typically bought by athletes, enthusiasts, and those looking for a more affordable entry into cross sport.
Two-stroke or four-stroke
Older KX 250s are two-strokes: lightweight, simple, but requiring frequent maintenance (piston and cylinder replacement). They're powerful, but harder to control for beginners.
Newer KX 250s (previously known as KX250F) are four-strokes: smoother power delivery, longer service intervals, but a more complex engine and costlier maintenance.
Choose according to your needs, considering your experience, the track, and your budget — two-strokes are cheaper, four-strokes generally more user-friendly.
Engines and transmissions
All KX 250s have a single-cylinder, liquid-cooled engine, and a manual clutch mechanical gearbox. Power figures depend on the generation and year.
The transmission is chain-driven, so the chain and sprockets are wear items. Fuel delivery on newer models is fuel injection, while older ones use a carburettor.
What to check when buying a used KX 250
First off — engine hours: dirt bikes wear out quickly. Ask when the clutch was last changed (for two-strokes) and when the valves were last adjusted (for four-strokes).
Check the frame for cracks and uneven welds, the suspension linkages, the wheel bearings, and the chain sprockets. Look out for signs of heavy track use — broken plastics, bent levers.
Ask to see how the bike starts cold: it's straightforward for a two-stroke, but for a four-stroke, check for smoke and unusual noises. Inquire about any history of track use.
Versions
Names and equipment vary by market and year; we list the versions most commonly found in Europe.
Dvitaktis KX 250
Earlier generationsA classic two-stroke dirt bike.
- Carburettor engine
- Light and fast
- Requires frequent maintenance
KX 250F
The four-stroke eraA four-stroke dirt bike that replaced the two-stroke.
- Smoother power delivery
- Later versions feature fuel injection
- More expensive engine maintenance
KX 250 keturtaktis
Newer generationsThe latest generation with more modern tech.
- Often — fuel injection
- Often — electric start
- Modern suspension and frame
Pritaikyti egzemplioriai
By ownerMany used motorcycles are kitted out with sporty extras.
- Modified exhaust systems
- Upgraded suspension
- Requires a thorough inspection
KX 250 main types compared
| Dvitaktis | KX 250F | KX 250 keturtaktis | |
|---|---|---|---|
| Who it's for | For enthusiasts and experienced riders | For sports riders and enthusiasts | For those seeking comfort |
| Maintenance | Carburettor | Carburettor, later fuel injection | Fuel injection |
| Upkeep | Frequent, but cheap | More expensive, less frequent | More expensive, less frequent |
| Starting | Choke | Usually the choke | Often a button |
| Price in the used market (relatively) | € | €€ | €€ |
For a beginner, a four-stroke with even power is usually fine, while those seeking affordable fun should look for a well-maintained two-stroke.
Pros
- Light and maneuverable
- Wide support from the parts and sports communities
- Two-stroke maintenance is cheap
- Perfect for motocross tracks
Cons
- Not suitable for public roads
- Quick to wear out, requires frequent maintenance
- Condition of used examples varies greatly
Frequently asked questions
Can the KX 250 be registered for road use?
This is a motocross bike designed for tracks. Its registration for road use depends on the specific example's documents and the country's regulations — check before buying.
How many hours does the bike have?
This is the most important figure. Ask the seller for the recorded hours or service history, and judge accordingly.
Is it suitable for a beginner?
A beginner is usually better off choosing a smaller capacity or four-stroke, as the two-stroke KX 250 is very abrupt.
Updated 2026-10-21 · Trim levels and equipment vary by market and model year — check the equipment of the specific car. · Translated automatically
