Yamaha YZ 85LW - 2021 Specifications and Reviews

The 2021 Yamaha YZ 85LW is a lightweight two-stroke enduro bike designed for young and smaller-framed riders learning off-road skills. Known for its nimble handling and responsive 85cc liquid-cooled engine, it delivers accessible power with excellent maneuverability on varied terrain. The bike excels as an entry-level competition machine for junior motocross and enduro racing.

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General information

CategoryEnduro / offroad
Year2021
ModelYamaha YZ 85LW

Engine and Transmission Specifications

ClutchWet, multiple-disc coil spring
Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
Lubrication systemPremix
IgnitionCDI
Fuel systemCarburettor. Keihin PWK28/1
Bore x Stroke47.5 x 47.8 mm (1.9 x 1.9 inches)
Compression8.1:1
Engine typeSingle cylinder, two-stroke
Capacity:85.0 ccm (5.19 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Diameter220 mm (8.7 inches)
Front brakesSingle disc
Rear tire90/100-16
Front tire70/100-19
Rear wheel travel287 mm (11.3 inches)
Rear SuspensionSwingarm (link suspension)
Front wheel travel275 mm (10.8 inches)
Front SuspensionTelescopic forks
Trail106 mm (4.2 inches)
Frame typeSemi-double cradle

Physical measures and capacities

Fuel capacity5.00 litres (1.32 US gallons)
Wheelbase1255 mm (49.4 inches)
Ground clearance360 mm (14.2 inches)
Overall width760 mm (29.9 inches)
Overall length1895 mm (74.6 inches)
Overall height1175 mm (46.3 inches)
Seat height870 mm (34.3 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc75.0 kg (165.3 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterKick
Color optionsTeam Yamaha Blue

Performance Profile & Rider Fit

Best For

Track60%
City5%
Cornering75%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a youth-to-teen competition motocross bike built for developing riders who have already outgrown smaller minicycles, not for adult beginners or road riders.
PurposeIt exists purely for motocross and off-road competition among junior riders, prioritizing light weight, high-rev two-stroke power delivery, and race-ready suspension over comfort or practicality.
Rider FitIts low seat height, minimal weight, and compact dimensions suit smaller, lighter riders, typically pre-teens to young teens, rather than full-sized adults.
CharacterExpect a peaky, high-revving two-stroke power delivery, razor-sharp handling, and a chassis that rewards aggressive, active riding on rough motocross terrain.
Not Ideal ForThis bike is not suited for adult commuting, road use, touring, carrying passengers, or riders who need a forgiving, low-maintenance machine.

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

Rider Fit Visualizer

2021 Yamaha YZ 85LW Rider Ergonomics Assessment

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

Feet:

At 870mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with tip-toe one foot on the 2021 Yamaha YZ 85LW, with a cramped knee angle of around 75 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 2021 Yamaha YZ 85LW is a powerful and reliable off-road motorcycle that is sure to impress riders of all skill levels. With a lightweight design and nimble handling, this bike offers ultimate control and maneuverability on the trails. The 85cc two-stroke engine delivers strong acceleration and top-end power, making it a fun and exciting ride for riders looking to push their limits. Additionally, the YZ 85LW features a race-inspired suspension and durable construction for tackling rugged terrain with ease. Whether you're a seasoned rider or just starting out, the Yamaha YZ 85LW is a top choice for anyone seeking a high-performance off-road bike. Overall, the 2021 Yamaha YZ 85LW is a fantastic option for riders who want a reliable and high-performance off-road motorcycle. With its lightweight design, powerful engine, and advanced suspension, this bike offers the perfect combination of speed, control, and durability. Whether you're hitting the trails for some weekend fun or competing in off-road races, the Yamaha YZ 85LW has everything you need to take your riding to the next level.
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