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Yamaha YZ85LW

Lightweight motocross racer

Running with high-tech chassis and engine designs, the YZ85 and the large-wheel YZ85LW 2-strokes are a top choice for tomorrow's pro riders. Designed to kick out holeshot-winning power, the free-revving 85cc liquid-cooled 2-stroke engine is one of the most advanced in its class.

Like our large-capacity race bikes, the YZ85/LW models are equipped with upside-down forks and a swingarm (link suspension) system for outstanding handling and steering qualities.

And with large-diameter front and rear discs, lightweight aluminium rims and hubs and slimline bodywork, Yamaha's YZ85/LW models are built for winners.


Engine type

Single cylinder, liquid-cooled, 2-stroke, reed valve



Bore x stroke

47.5 mm x 47.8 mm

Compression ratio

8.2 : 1

Lubrication system


Clutch type

Wet, multiple-disc coil spring

Fuel system

Keihin PWK28/1

Ignition system


Starter system


Transmission system

Constant Mesh, 6-speed

Final transmission




Semi double cradle

Front suspension system

Upside-down telescopic fork

Front travel

275 mm

Caster angle



106 mm

Rear suspension system

Swingarm, (link suspension)

Rear travel

282 / 287* mm

Front brake

Single Disc, Ø 220 mm

Rear brake

Single Disc, Ø 190 mm

Front tyre

70/100-17 40M / 70/100-19 42M

Rear tyre

90/100-14 49M / 90/100-16 52M


Overall length

1,818 / 1,903* mm

Overall width

758 mm

Overall height

1,161 mm

Seat height

864 / 904* mm

Wheel base

1,255 / 1,286* mm

Minimum ground clearance

351 / 393* mm

Wet weight (including full oil and fuel tank)

71 / 73* kg

Fuel tank capacity

5.0 litres

Oil tank capacity

0.5 litres


*YZ85LW only


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