Yamaha YZ85 - 2020 Specifications and Reviews

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.

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General information

CategoryCross / motocross
Year2020
ModelYamaha YZ85

Engine and Transmission Specifications

ClutchWet multi-disc
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
IgnitionCDI
Fuel systemCarburettor. Keihin PWK 28
Bore x Stroke47.5 x 47.8 mm (1.9 x 1.9 inches)
Compression9.6:1
Engine detailsReed-valve-inducted
Engine typeSingle cylinder, two-stroke
Capacity:85.0 ccm (5.19 cubic inches)
 
 

Brakes, suspension, Frame and wheels

WheelsDunlop tyres
Rear brakesSingle disc. Hydraulic.
Diameter220 mm (8.7 inches)
Front brakesSingle disc. Hydraulic.
Rear tire90/100-14
Front tire70/100-17
Rear wheel travel282 mm (11.1 inches)
Rear SuspensionSingle shock
Front wheel travel274 mm (10.8 inches)
Front SuspensionInverted fork
Trail89 mm (3.5 inches)
Rake (fork angle)26.3°
Frame typeSemi-double-cradle frame

Physical measures and capacities

Fuel capacity4.92 litres (1.30 US gallons)
Wheelbase1255 mm (49.4 inches)
Ground clearance330 mm (13.0 inches)
Overall width759 mm (29.9 inches)
Overall length1821 mm (71.7 inches)
Overall height1146 mm (45.1 inches)
Seat height841 mm (33.1 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc73.0 kg (161.0 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Factory warranty30 Day Limited Factory Warranty
StarterElectric
Color optionsTeam Yamaha Blue

Performance Profile & Rider Fit

Best For

Track85%
City5%
Cornering90%
Daily Riding5%
Touring3%
Passenger0%

Rider Profile

Best ForThis is a youth/amateur competition machine best suited to developing riders with prior dirt bike experience moving up from smaller minis, not adult novices or road riders.
PurposeBuilt purely for motocross racing and track practice, not for trail riding, commuting, or general recreation.
Rider FitIts tiny 161 lb wet weight and low seat height suit smaller, lighter riders, typically pre-teens to young teens, rather than full-grown adults.
CharacterA high-strung, rev-happy two-stroke that rewards aggressive clutch and throttle work with sharp, flickable handling on motocross tracks.
Not Ideal ForNot for adult riders, highway use, long-distance touring, or anyone seeking a comfortable or forgiving first bike.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2020 Yamaha YZ85 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 841mm, a rider of 175cm with a 79cm (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.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

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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