Motocross Bikes
2005Yamaha YZ250
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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
- 46.0 HP (34.3 kW)
What’s new for the 2005 Yamaha YZ250
vs the 2004| Spec | 2004 | 2005 |
|---|---|---|
| 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 |
| Compression | 9.0:1 | 9.1:1 |
Other years
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
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
- 0.4767 HP/kg (dry)
- Bore x stroke
- 66.4 x 72.0 mm
- Compression
- 9.1:1
- 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
- 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
- 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 | 2005 | 2008 | 2015 | 2021 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 249 cc | 249 cc | 249 cc | 249 cc | 249 cc | 249 cc |
| Dry weight | 98 kg | 97 kg | 96 kg | 96 kg | 96 kg | 96 kg |
| Seat height | 990 mm | 991 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 2005 Yamaha YZ250 has a Capacity of 249.0 ccm (15.19 cubic inches).
What engine power does the Yamaha YZ250 have?
The 2005 Yamaha YZ250 has a Power of 46.0 HP (34.3 kW).
How many gears does the Yamaha YZ250 have?
The 2005 Yamaha YZ250 has a Gearbox of 5-speed.
How much does the Yamaha YZ250 weigh?
The 2005 Yamaha YZ250 has a Dry weight of 96.5 kg (212.7 pounds).
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