English
Lietuvių
Latviešu
Eesti
Polski
Русский
Українська
Deutsch
Nederlands
Čeština
Slovenčina
Svenska
Norsk
Dansk
Suomi
Yamaha YZ 250: a two-stroke cross motorcycle, generations and what to check
Yamaha YZ 250 — a two-stroke cross motorcycle, produced since 1974 and becoming one of the most famous models in its class. In this article, we review the main generations, engine, and what to check when buying a used motorcycle.
YZ 250 in brief
The YZ 250 is a competitive two-stroke cross motorcycle designed for tracks and training. It's lightweight, responsive, and highly regarded for its power and simplicity.
This model has been in production for over five decades, so different generations vary greatly — from old classics to modern ones with advanced suspension and frames.
Generations — what sets them apart
Earlier generations have simpler construction and less advanced suspension; they are favoured by collectors. Later generations feature liquid-cooled engines, improved frames, and better suspension.
Important distinction: the YZ 250 is a two-stroke, while the YZ 250 F is a four-stroke, making it a completely different model. There's also the YZ 250 X — a version tailored for cross tracks.
Engine and transmission
The engine is a single-cylinder two-stroke, around 250 cm³ in capacity. Two-strokes require a mix of oil and fuel, so you need to prepare the fuel according to the manufacturer's guidelines.
The gearbox is manual, with a hand-operated clutch. The power delivery of a two-stroke is more abrupt than a four-stroke, so it requires more experience to handle.
What to check when buying a used YZ 250
Ask when the piston, rings, and cylinder were last replaced. For two-strokes, these jobs are done more frequently than for four-strokes, so the service history is crucial.
Check the frame, suspension and rear shock absorber; look for any oil leaks in the chain. Check the exhaust system for any signs of corrosion.
Check if the engine starts easily, if the clutch operates smoothly, and if there are no signs of wear on the frame. When buying, it's especially important to know how the motorcycle was used.
Trims and versions
This motorcycle doesn't have classic trims — we present the main versions.
Ankstyvosios kartos
From 1974Classic motorcycles, prized by collectors.
- Simple design
- Older suspension
- Often — air-cooled engine
Vėlesnės kartos
Later yearsMore modern motorcycles with improved suspension.
- Liquid-cooled engine
- Improved frame
- Often — better suspension
Naujos kartos
Newer yearsLatest-generation models with cutting-edge construction.
- Modern plastics
- Improved engine
- Often — better suspension
YZ 250 X
By yearVersion for tracks and long drives.
- Tailored for cross-country tracks
- Different gearbox
- Often — additional equipment
YZ 250 head-to-head comparison
| Ankstyvosios | Vėlesnės | Naujos | |
|---|---|---|---|
| Who it's for | For collectors | For those starting out in motorsport | For serious motorsport |
| Cooling | Tyre | Generations | Generations |
| Suspension | Base | Enhanced | Modern |
| Maintenance needs | High | High | Average |
| Price in the used market (relatively) | € | €€ | €€€ |
Later generations with good maintenance history are great for beginners and sports enthusiasts, while early models appeal to collectors.
Pros
- Light and responsive
- Simple design
- Many parts and accessories
- Acknowledged model
Cons
- Two-strokes need frequent maintenance
- Not suited to public roads
- Instant power can be tough for a novice
Frequently asked questions
What's the difference between the YZ 250 and YZ 250 F?
The YZ 250 is a two-stroke, while the YZ 250 F is a four-stroke. They have different engine characteristics and maintenance requirements.
Can it be ridden on the road?
No, it's a motocross bike designed for closed tracks; it's not legal to ride on public roads.
How often does a two-stroke need servicing?
More often than a four-stroke — you'll need to change the piston and rings according to the manufacturer's intervals. Ask about its history when buying.
Updated 2026-10-21 · Trim levels and equipment vary by market and model year — check the equipment of the specific car. · Translated automatically
