Motocross Bikes

2020Yamaha YZ85

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The 2020 Yamaha YZ85 is a lightweight motocross bike designed for young intermediate riders transitioning to larger machines. Its liquid-cooled 85cc two-stroke engine delivers responsive power with excellent acceleration, while the semi-double-cradle frame provides nimble handling on both track and trail. Known for reliability and competitive performance in youth racing, it remains the go-to choice for serious junior motocross enthusiasts.

Capacity: 85.0 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 66.2 kg
Seat height: 841 mm
Power: Not on record
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What’s new for the 2020 Yamaha YZ85

vs the 2019

Spec	2019	2020
Compression	8.2:1	9.6:1

Other years 2002 2003 2004 2005 2006 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 & trail92%

Cornering90%

City riding5%

Daily riding5%

Touring3%

Two-up0%

Track85%

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?

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Your height

Inseam (optional)

Units

At 841mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with balls of both feet on the 2020 Yamaha YZ85, with a cramped knee angle of around 70 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: Electric
Ignition: CDI
Lubrication system: Wet sump
Power: Not on record - add it

Transmission

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

Dimensions & weight

Wheelbase: 1255 mm
Overall length: 1821 mm
Overall width: 759 mm
Overall height: 1146 mm
Seat height: 841 mm
Dry weight: 66.2 kg
Wet weight: 73.0 kg
Fuel capacity: 4.90 litres
Ground clearance: 330 mm

Chassis & suspension

Frame: 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): 26.3°
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: Team Yamaha Blue

Specs last verified against published sources: October 2026.

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	2015	2020	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	841 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

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MotorcycleDB

The 2020 Yamaha YZ85 motorcycle is a fantastic option for riders looking for a high-performance bike with a competitive edge. With its powerful 85cc engine, this bike delivers impressive speed and agility, making it an ideal choice for motocross and off-road racing. Additionally, the YZ85 features top-notch suspension and handling, providing riders with a smooth and controlled riding experience. Whether you're a seasoned racer or a beginner looking to dominate the track, the Yamaha YZ85 is sure to impress with its performance and reliability.

Overall, the 2020 Yamaha YZ85 motorcycle is a top contender in its class, offering riders an exceptional combination of power, handling, and agility. With its advanced technology and top-notch engineering, this bike is built to perform and is a great option for anyone looking to take their riding to the next level. Whether you're hitting the trails or tearing up the track, the Yamaha YZ85 is a standout choice for riders who demand the best in performance and reliability.

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