2012Yamaha YZ85LW

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The 2012 Yamaha YZ85LW is a lightweight motocross bike designed for young riders and beginners transitioning to competitive racing. Powered by an 85cc liquid-cooled two-stroke engine with a six-speed gearbox, it delivers responsive performance and nimble handling through an aluminum semi-double cradle frame. Known for its reliability and excellent power delivery characteristics, it remains a popular choice for youth motocross training and amateur competition.

Capacity: 85.0 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 66.0 kg
Seat height: 904 mm
Power: Not on record
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⇄ Compare with another bike All model years

What’s new for the 2012 Yamaha YZ85LW

vs the 2011

Spec	2011	2012
Wet weight	71.0 kg (156.5 pounds)	73.0 kg (160.9 pounds)
Seat height	864 mm (34.0 inches)	904 mm (35.6 inches)
Front suspension	Telescopic forks	Upside-down telescopic fork
Rear suspension	Swingarm (link suspension)	Single shock
Wheelbase	1255 mm (49.4 inches)	1286 mm (50.6 inches)

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

Off-road & trail90%

Cornering80%

City riding5%

Daily riding5%

Touring3%

Two-up0%

Track85%

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?

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Your height

Inseam (optional)

Units

At 904mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2012 Yamaha YZ85LW, with a cramped knee angle of around 80 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

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Full specifications

Engine

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: 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: 1286 mm
Overall length: 1903 mm
Overall width: 757 mm
Overall height: 1161 mm
Seat height: 904 mm
Dry weight: 66.0 kg
Wet weight: 73.0 kg
Fuel capacity: 5.00 litres
Ground clearance: 393 mm
Oil capacity: 0.50 litres

Chassis & suspension

Frame: Aluminium. Semi double cradle.
Front suspension: Upside-down telescopic fork
Rear suspension: Single shock
Front wheel travel: 274 mm
Rear wheel travel: 287 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: 70/100-19
Rear tyre: 90/100-16

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	2009	2012	2014	2018	2023	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	904 mm	904 mm	904 mm	884 mm	884 mm
Fuel capacity	5 L	5 L	5 L	5 L	5 L	4.9 L