2021Kawasaki KX85-II

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The 2021 Kawasaki KX85-II is a lightweight two-stroke motocross bike engineered for young riders and junior competitors. Powered by an 84cc liquid-cooled engine with a piston reed valve design, it delivers sharp throttle response and nimble handling. Known for its proven reliability and competitive performance in youth motocross racing, it offers an ideal platform for developing fundamental riding skills.

Capacity: 84.0 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 68.0 kg
Seat height: 870 mm
Power: Not on record
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Other years 2002 2003 2004 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

Off-road & trail95%

Cornering60%

City riding5%

Daily riding5%

Touring5%

Two-up0%

Track40%

Best for: It exists purely for motocross track riding and racing, delivering quick two-stroke power in a compact, lightweight package.
Built for: Sharp, revvy, and eager two-stroke character with immediate throttle response and a chassis tuned for tight, flickable handling on rough terrain.
Not ideal for: It is not suitable for road use, commuting, touring, carrying a passenger, or for taller/heavier adult riders seeking a full-size machine.

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 870mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with tip-toe one foot on the 2021 Kawasaki KX85-II, 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: 84.0 ccm
Engine type: Single, two-stroke
Bore x stroke: 48.5 x 45.8 mm
Compression: 10.9:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: CDI
Lubrication system: Petrol mix
Power: Not on record - add it

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet multi-disc, manual

Dimensions & weight

Wheelbase: 1310 mm
Overall length: 1920 mm
Overall width: 765 mm
Overall height: 1150 mm
Seat height: 870 mm
Dry weight: 68.0 kg
Wet weight: 77.0 kg
Fuel capacity: 5.00 litres
Ground clearance: 330 mm

Chassis & suspension

Frame: Perimeter, high-tensile steel
Front suspension: 36 mm inverted telescopic fork with 20-way compression damping
Rear suspension: Bottom-Link Uni-Trak with adjustable preload, 24-way compression and 21-way rebound damping
Front wheel travel: 275 mm
Rear wheel travel: 275 mm
Rake (fork angle): 29.0°
Trail: 108 mm

Brakes & wheels

Front brakes: Single disc. Dual-piston
Front brakes diameter: 220 mm
Rear brakes: Single disc
Rear brakes diameter: 184 mm
Front tyre: 70/100-19
Rear tyre: 90/100-16

Other

Color options: Lime Green

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	2010	2016	2021	2027
Capacity	84 cc	84 cc	84 cc	84 cc	84 cc
Dry weight	68 kg	68 kg	68 kg	68 kg	68 kg
Seat height	870 mm	870 mm	870 mm	870 mm	865 mm
Fuel capacity	5.5 L	5.5 L	5 L	5 L	5 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB

The 2021 Kawasaki KX85-II is a top-notch off-road motorcycle for young riders. Equipped with a liquid-cooled 85cc two-stroke engine, this bike delivers excellent power and performance. Its lightweight chassis and adjustable suspension make it easy to handle, giving riders confidence to take on rough terrain. The KX85-II also features disc brakes for reliable stopping power, ensuring a safe and thrilling riding experience. With its aggressive styling and race-ready features, the 2021 Kawasaki KX85-II is a fantastic choice for young motocross enthusiasts.

Overall, the 2021 Kawasaki KX85-II is a fantastic off-road motorcycle for young riders who are eager to hit the trails. Its powerful engine, responsive handling, and reliable braking system make it a top contender in its class. With its sleek design and championship-winning pedigree, the KX85-II is sure to provide endless excitement for young riders looking to conquer the off-road. Whether they're hitting the track or exploring the trails, this bike is built to deliver thrills and performance.

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