Motocross Bikes
2003Yamaha YZ250
40 fields on record
The 2003 Yamaha YZ250 is a two-stroke motocross bike from Yamaha's long-running YZ line. Its liquid-cooled 249cc single makes about 46 hp on a dyno, through a five-speed gearbox and chain. A tall 990 mm seat, 103.9 kg wet weight and 7.9-litre tank make it a serious race machine.
- Capacity
- 249.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 5-speed
- Dry weight
- 97.5 kg
- Seat height
- 990 mm
- Power
- 46.0 HP (34.3 kW)
Other years
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
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2015
2016
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2018
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2020
2021
2022
2023
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2025
2026
2027
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
- 46.0 HP (34.3 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.4718 HP/kg (dry)
- Bore x stroke
- 66.4 x 72.0 mm
- Compression
- 8.8:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Electric
- Ignition
- CDI
- Lubrication system
- Dry sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multiplate, wet
Dimensions & weight
- Wheelbase
- 1485 mm
- Overall length
- 2182 mm
- Overall width
- 827 mm
- Overall height
- 1302 mm
- Seat height
- 990 mm
- Dry weight
- 97.5 kg
- Wet weight
- 103.9 kg
- Fuel capacity
- 7.90 litres
- Ground clearance
- 391 mm
- Oil capacity
- 0.80 litres
Chassis & suspension
- Frame
- Aluminium
- Front suspension
- Telescopic fork
- Rear suspension
- Swinging arm (Monocross)
- 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
- 80/100-21 51M
- Rear tyre
- 110/90-19 62M
Other
- Comments
- Power is a Motocross Action dyno figure; Yamaha does not publish one for the YZ250.
Specs last verified against published sources: .
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 | 2008 | 2015 | 2021 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 249 cc | 249 cc | 249 cc | 249 cc | 249 cc | 249 cc |
| Dry weight | 98 kg | 98 kg | 96 kg | 96 kg | 96 kg | 96 kg |
| Seat height | 990 mm | 990 mm | 993 mm | 993 mm | 970 mm | 975 mm |
| Fuel capacity | 7.9 L | 7.9 L | 7.9 L | 8 L | 8 L | 6.8 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 YZ250?
The 2003 Yamaha YZ250 has a Capacity of 249.0 ccm (15.19 cubic inches).
What engine power does the Yamaha YZ250 have?
The 2003 Yamaha YZ250 has a Power of 46.0 HP (34.3 kW).
How many gears does the Yamaha YZ250 have?
The 2003 Yamaha YZ250 has a Gearbox of 5-speed.
How much does the Yamaha YZ250 weigh?
The 2003 Yamaha YZ250 has a Dry weight of 97.5 kg (215.0 pounds).
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