Motocross Bikes
2012Yamaha YZ85
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The 2012 Yamaha YZ85 is a lightweight 85cc two-stroke motocross bike engineered for young and intermediate riders transitioning to competitive off-road racing. Its liquid-cooled single-cylinder engine delivers punchy power delivery characteristic of reed-valve two-strokes, while the responsive six-speed gearbox and nimble semi-double-cradle frame provide excellent maneuverability on technical terrain. Best known for reliability and forgiving handling, the YZ85 remains a popular choice in youth motocross championships.
- Capacity
- 85.0 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 66.2 kg
- Seat height
- 864 mm
- Power
- Not on record
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What’s new for the 2012 Yamaha YZ85
vs the 2011| Spec | 2011 | 2012 |
|---|---|---|
| Front brakes | Single disc. Wave | Single disc. Hydraulic |
| Rear brakes | Single disc. Wave | Single disc. Hydraulic |
Other years
2002
2003
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2011
2012
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2015
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2020
2021
2022
2023
2024
2025
2026
2027
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for motocross racing and track practice, not for trail riding, commuting, or general recreation.
- Built for
- A high-strung, rev-happy two-stroke that rewards aggressive clutch and throttle work with sharp, flickable handling on motocross tracks.
- Not ideal for
- Not for adult riders, highway use, long-distance touring, or anyone seeking a comfortable or forgiving first bike.
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
- 85.0 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
- Electric
- Ignition
- CDI
- Lubrication system
- Wet sump
- Power
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multiplate
Dimensions & weight
- Wheelbase
- 1257 mm
- Overall length
- 1821 mm
- Overall width
- 757 mm
- Overall height
- 1161 mm
- Seat height
- 864 mm
- Dry weight
- 66.2 kg
- Wet weight
- 71.2 kg
- Fuel capacity
- 4.90 litres
- Ground clearance
- 351 mm
Chassis & suspension
- Frame
- Single-backbone, semi-double-cradle frame
- Front suspension
- Inverted fork
- Rear suspension
- Single shock
- Front wheel travel
- 274 mm
- Rear wheel travel
- 282 mm
- Rake (fork angle)
- 28.0°
- Trail
- 89 mm
Brakes & wheels
- Front brakes
- Single disc. Hydraulic
- Front brakes diameter
- 220 mm
- Rear brakes
- Single disc. Hydraulic
- Rear brakes diameter
- 190 mm
- Front tyre
- 70/100-17
- Rear tyre
- 90/100-14
Other
- Color options
- Blue/White
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 | 2008 | 2012 | 2015 | 2021 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 85 cc | 85 cc | 85 cc | 85 cc | 85 cc | 85 cc |
| Dry weight | 66 kg | 66 kg | 66 kg | 66 kg | 66 kg | 66 kg |
| Seat height | 864 mm | 864 mm | 864 mm | 841 mm | 841 mm | 841 mm |
| Fuel capacity | 4.9 L | 4.9 L | 4.9 L | 4.9 L | 4.9 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 YZ85?
The 2012 Yamaha YZ85 has a Capacity of 85.0 ccm (5.19 cubic inches).
How many gears does the Yamaha YZ85 have?
The 2012 Yamaha YZ85 has a Gearbox of 6-speed.
How much does the Yamaha YZ85 weigh?
The 2012 Yamaha YZ85 has a Dry weight of 66.2 kg (145.9 pounds).
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