Motocross Bikes
2005Yamaha YZ 250
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The 2005 Yamaha YZ 250 is a lightweight motocross bike designed for intermediate to advanced riders seeking competitive performance on the track. Powered by a liquid-cooled single-cylinder two-stroke engine, it delivers strong power delivery and agility characteristic of 250cc class racers. Known for its reliable Yamaha engineering and responsive handling, this model remains a popular choice for amateur and semi-pro motocross competition.
- Capacity
- 249.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 5-speed
- Dry weight
- 96.5 kg
- Seat height
- 991 mm
- Power
- 24.9 HP (18.3 kW)
What’s new for the 2005 Yamaha YZ 250
vs the 2004| Spec | 2004 | 2005 |
|---|---|---|
| Dry weight | 97.0 kg (213.8 pounds) | 96.5 kg (212.7 pounds) |
| Seat height | 990 mm (39.0 inches) | 991 mm (39.0 inches) |
| Front suspension | Telescopic fork | 48mm Kayaba inverted cartridge fork w/adjustable compression and rebound damping |
| Rear suspension | Swinging arm (Monocross) | Kayaba single shock w/adjustable preload, compression and rebound damping separate hi/lo-speed compression adjusters |
| Wheelbase | 1485 mm (58.5 inches) | 1486 mm (58.5 inches) |
| Compression | 9.0:1 | 9.1:1 |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built exclusively for motocross racing and rough off-road riding, not for street use or commuting.
- Built for
- A raw, lightweight, high-revving two-stroke that rewards aggressive, active riding with explosive acceleration out of corners and razor-sharp handling.
- Not ideal for
- Not suitable for new riders, road use, passengers, or anyone wanting comfort, storage, or long-distance touring capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 249.0 ccm
- Power
- 24.9 HP (18.3 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.2580 HP/kg
- Bore x stroke
- 66.4 x 72.0 mm
- Compression
- 9.1:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Electric
- Ignition
- CDI
- Valves per cylinder
- 1
- Lubrication system
- Dry sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multiplate, wet
Dimensions & weight
- Wheelbase
- 1486 mm
- Overall length
- 2182 mm
- Overall width
- 828 mm
- Overall height
- 1308 mm
- Seat height
- 991 mm
- Dry weight
- 96.5 kg
- Wet weight
- 103.9 kg
- Fuel capacity
- 7.90 litres
- Ground clearance
- 396 mm
- Oil capacity
- 0.80 litres
Chassis & suspension
- Frame
- Aluminium
- Front suspension
- 48mm Kayaba inverted cartridge fork w/adjustable compression and rebound damping
- Rear suspension
- Kayaba single shock w/adjustable preload, compression and rebound damping separate hi/lo-speed compression adjusters
- Front wheel travel
- 300 mm
- Rear wheel travel
- 315 mm
- Rake (fork angle)
- 26.0°
- Trail
- 109 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 250 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 245 mm
- Front tyre
- 80/80-21
- Rear tyre
- 110/90-19
Other
- Color options
- Team Yamaha Blue/White
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2002 | 2003 | 2005 | 2006 | 2007 |
|---|---|---|---|---|---|
| Capacity | 249 cc | 249 cc | 249 cc | 249 cc | 249 cc |
| Dry weight | 98 kg | 98 kg | 97 kg | 96 kg | 96 kg |
| Seat height | 990 mm | 990 mm | 991 mm | 997 mm | 993 mm |
| Fuel capacity | 7.9 L | 7.9 L | 7.9 L | 8 L | 7.9 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Yamaha YZ 250?
The 2005 Yamaha YZ 250 has a Capacity of 249.0 ccm (15.19 cubic inches).
What engine power does the Yamaha YZ 250 have?
The 2005 Yamaha YZ 250 has a Power of 24.9 HP (18.3 kW).
How many gears does the Yamaha YZ 250 have?
The 2005 Yamaha YZ 250 has a Gearbox of 5-speed.
How much does the Yamaha YZ 250 weigh?
The 2005 Yamaha YZ 250 has a Dry weight of 96.5 kg (212.7 pounds).
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