Motocross Bikes

2027Yamaha YZ85LW

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The 2027 Yamaha YZ85LW is a liquid-cooled 2-stroke designed for young and intermediate off-road riders transitioning to larger bikes. Known for its responsive 85cc engine and nimble handling on varied terrain, it combines manageable power delivery with a lightweight 165-pound chassis. The 34.8-inch seat height and agile wheelbase make it ideal for developing technical skills in motocross and trail riding.

Capacity: 85.0 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 66.0 kg
Seat height: 884 mm
Power: Not on record
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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 884mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2027 Yamaha YZ85LW, with a cramped knee angle of around 75 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 821-900 mm — Long Legs →

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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: 9.6:1
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: 1285 mm
Overall length: 1895 mm
Overall width: 760 mm
Overall height: 1176 mm
Seat height: 884 mm
Dry weight: 66.0 kg
Wet weight: 74.8 kg
Fuel capacity: 4.90 litres
Ground clearance: 361 mm
Oil capacity: 0.50 litres

Chassis & suspension

Frame: Semi-double cradle
Front suspension: KYB Inverted fork; fully adjustable
Rear suspension: KYB Single shock; fully adjustable
Front wheel travel: 275 mm
Rear wheel travel: 287 mm
Rake (fork angle): 26.0°
Trail: 99 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

Comments: 2027 updates (Racer X, 2026-06-03): MotoTassinari VForce4R reed valve, updated power valve, heavier flywheel, new cylinder-head alloy, water pump and clutch revisions, new engine/swingarm brackets, sealed front wheel bearings, quick-action throttle.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.