Yamaha YZ85 - 2019 Specifications and Reviews

The 2019 Yamaha YZ85 is a lightweight, nimble 85cc dirt bike designed for young and developing riders transitioning to competitive motocross. Known for its responsive handling and electric starter convenience, it delivers excellent maneuverability on tight tracks. This bike excels as an entry-level competition machine for junior riders aged 12 and up.

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General information

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CategoryCross / motocross
Year2019
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)
Compression8.2:1
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
Rake (fork angle)28.0°
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

2019 Yamaha YZ85 Rider Ergonomics Assessment

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Feet:

At 841mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with balls of both feet on the 2019 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 2019 Yamaha YZ85 is a top-notch motocross bike that delivers exceptional performance and handling. With its 85cc liquid-cooled two-stroke engine, this motorcycle packs a punch and is perfect for riders looking for a competitive edge on the track. The YZ85 features a lightweight chassis and fully adjustable suspension, allowing for precise control and agile maneuverability through tight corners and over jumps. Its comfortable ergonomics and responsive braking system make it a pleasure to ride for both amateur and experienced riders alike. Overall, the 2019 Yamaha YZ85 is a fantastic choice for riders who want a powerful and capable motocross bike. Its reliable performance and advanced features make it a standout in its class, and it's sure to impress anyone who takes it for a spin on the track. Whether you're a seasoned rider or just starting out, the YZ85 delivers a thrilling and enjoyable experience every time you hit the dirt.
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