Yamaha YZ85LW - 2014 Specifications and Reviews

The 2014 Yamaha YZ85LW is a liquid-cooled 85cc motocross machine designed for intermediate young riders transitioning to more serious competition. Powered by a responsive two-stroke engine with reed valve induction, it delivers punchy performance ideal for closed-course racing and training. Known for its reliable Keihin carburettor setup and agile handling characteristics, the YZ85LW remains a respected choice in the lightweight motocross class.

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General information

CategoryCross / motocross
Year2014
ModelYamaha YZ85LW

Engine and Transmission Specifications

DrivelineConstant Mesh
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Lubrication systemPremix
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
Engine typeSingle cylinder, two-stroke
Capacity:85.00 ccm (5.19 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter190 mm (7.5 inches)
Rear brakesSingle disc
Front brakes diameter220 mm (8.7 inches)
Front brakesSingle disc
Rear tyre dimensions90/100-16
Front tyre dimensions70/100-19
Rear suspension travel282 mm (11.1 inches)
Rear suspensionSwingarm, (link suspension)
Front suspension travel274 mm (10.8 inches)
Front suspensionUpside-down telescopic fork
Trail106 mm (4.2 inches)
Rake (fork angle)27.0°
Frame typeAluminium. Semi double cradle.
 
 

Physical measures and capacities

Oil capacity0.50 litres (0.03 quarts)
Fuel capacity5.00 litres (1.32 gallons)
Wheelbase1,286 mm (50.6 inches)
Ground clearance393 mm (15.5 inches)
Overall width757 mm (29.8 inches)
Overall length1,903 mm (74.9 inches)
Overall height1,161 mm (45.7 inches)
Seat height904 mm (35.6 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc73.0 kg (160.9 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsLW is an abbreviation for Large Wheels.
Color optionsBlue/White
Factory warranty30 Day (Limited Factory Warranty)

Performance Profile & Rider Fit

Best For

Track85%
City5%
Cornering80%
Daily Riding5%
Touring3%
Passenger0%

Rider Profile

Best ForThis machine is built for developing riders, typically youth racers who have outgrown 65cc minis and are honing skills before stepping up to full-size motocross bikes.
PurposeIt is a dedicated amateur motocross competition bike designed for closed-course tracks, not a general-purpose or road-legal machine.
Rider FitIts low seat height, light wet weight, and compact dimensions suit smaller, lighter riders such as pre-teens and young teenagers rather than full-grown adults.
CharacterThe 2-stroke engine and lightweight chassis reward an aggressive, high-revving riding style with sharp, flickable handling on jumps and tight turns.
Not Ideal ForThis is not suitable for adult riders, street use, touring, commuting, or anyone seeking a comfortable, low-maintenance everyday vehicle.

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

Rider Fit Visualizer

2014 Yamaha YZ85LW Rider Ergonomics Assessment

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

Feet:

At 904mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2014 Yamaha YZ85LW, with a cramped knee angle of around 80 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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