Motocross Bikes
2009Yamaha YZ85LW
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The 2009 Yamaha YZ85LW is a liquid-cooled 85cc off-road bike designed for young and smaller-framed riders learning motocross and trail riding. Known for its lightweight construction and manageable power delivery from its single-cylinder two-stroke engine, it delivers responsive handling and reliability for entry-level competition and recreational riding.
- Capacity
- 84.7 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 66.0 kg
- Seat height
- 864 mm
- Power
- Not on record
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Other years
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
- It is a dedicated amateur motocross competition bike designed for closed-course tracks, not a general-purpose or road-legal machine.
- Built for
- The 2-stroke engine and lightweight chassis reward an aggressive, high-revving riding style with sharp, flickable handling on jumps and tight turns.
- Not ideal for
- This is not suitable for adult riders, street use, touring, commuting, or anyone seeking a comfortable, low-maintenance everyday vehicle.
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
- 84.7 ccm
- Engine type
- Single, two-stroke
- Bore x stroke
- 47.5 x 47.8 mm
- Compression
- 8.2:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- CDI
- Valves per cylinder
- 5
- Lubrication system
- Premix
- Power
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, multiple-disc coil spring
Dimensions & weight
- Wheelbase
- 1255 mm
- Overall length
- 1818 mm
- Overall width
- 758 mm
- Overall height
- 1161 mm
- Seat height
- 864 mm
- Dry weight
- 66.0 kg
- Wet weight
- 71.0 kg
- Fuel capacity
- 5.00 litres
- Ground clearance
- 351 mm
- Oil capacity
- 0.50 litres
Chassis & suspension
- Frame
- Semi-double cradle
- Front suspension
- Telescopic forks
- Rear suspension
- Swingarm (link suspension)
- Front wheel travel
- 275 mm
- Rear wheel travel
- 282 mm
- Rake (fork angle)
- 27.0°
- Trail
- 106 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 220 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 190 mm
- Front tyre
- 70/100-17
- Rear tyre
- 90/100-14
Other
- Color options
- Blue
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 | 2009 | 2014 | 2018 | 2023 | 2027 |
|---|---|---|---|---|---|
| Capacity | 85 cc | 85 cc | 85 cc | 85 cc | 85 cc |
| Dry weight | 66 kg | 66 kg | 66 kg | 66 kg | 66 kg |
| Seat height | 864 mm | 904 mm | 904 mm | 884 mm | 884 mm |
| Fuel capacity | 5 L | 5 L | 5 L | 5 L | 4.9 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 YZ85LW?
The 2009 Yamaha YZ85LW has a Capacity of 84.7 ccm (5.17 cubic inches).
How many gears does the Yamaha YZ85LW have?
The 2009 Yamaha YZ85LW has a Gearbox of 6-speed.
How much does the Yamaha YZ85LW weigh?
The 2009 Yamaha YZ85LW has a Dry weight of 66.0 kg (145.5 pounds).
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