Yamaha YZ 85 LW - 2003 Specifications and Reviews

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General information

CategoryCross / motocross
ModelYamaha YZ 85 LW
Year2003
 
 

Engine and Transmission Specifications

Cooling systemLiquid
Bore x stroke47.5 x 47.8 mm (1.9 x 1.9 inches)
Compression8.2:1
Stroke2
Engine typeSingle cylinder
Capacity:84.70 ccm (5.17 cubic inches)

Physical measures and capacities

Wheelbase1,278 mm (50.3 inches)
Ground clearance391 mm (15.4 inches)
Overall width758 mm (29.8 inches)
Overall length1,896 mm (74.6 inches)
Overall height1,204 mm (47.4 inches)
Seat height902 mm (35.5 inches) If adjustable, lowest setting.
Dry weight69.0 kg (152.1 pounds)

Yamaha YZ 85 LW dimensions and frame

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 52M
Front tyre dimensions70/100-19 42M
Rear suspension travel287 mm (11.3 inches)
Front suspension travel275 mm (10.8 inches)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track70%
City5%
Cornering80%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a youth/small-adult competition motocross bike best suited to developing riders with prior dirt bike experience, not beginners on two wheels in general.
PurposeBuilt purely for motocross racing on closed off-road tracks, note this is the larger-wheel (LW) variant aimed at bigger junior riders stepping up before a full-size bike.
Rider FitIts low seat height and light dry weight make it manageable for smaller or lighter riders, but the firm racing suspension and kick start demand decent physical fitness and technique.
CharacterA high-revving, agile, purpose-built racer that rewards aggressive, committed riding and rapid direction changes over jumps and berms.
Not Ideal ForThis is not suitable for road use, commuting, touring, carrying a passenger, or riders looking for a comfortable, low-maintenance everyday machine.

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

Rider Fit Visualizer

2003 Yamaha YZ 85 LW Rider Ergonomics Assessment

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Feet:

At 902mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2003 Yamaha YZ 85 LW, 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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