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Yamaha YZ250

The genuine original.

At Yamaha we won our first ever World Motocross Championship back in 1973 - with the original YZ250 2-stroke. Today, featuring a lightweight long-stroke engine that delivers an instant hit of free-revving power, the YZ250 is still the ultimate 2-stroke race bike.

Its high-tech aluminium chassis has new lightweight wheel rims, reducing unsprung weight for enhanced handling and suspension performance. New speedblock graphics give a factory look, while a special new seat design has just the right balance of grip and rider mobility.

With punchy 2-stroke power, superb agility and low weight, the latest YZ250 is built to deliver a unique and exciting riding experience.


Engine type

liquid-cooled, 2-stroke, Forward-inclined single cylinder, reed valve with YPVS



Bore x stroke

66.4 mm x 72.0 mm

Compression ratio

8.9 ~ 10.6 : 1

Lubrication system


Clutch type

Wet, multiple-disc coil spring

Fuel system

Keihin PWK38S/1

Ignition system


Starter system


Transmission system

Constant Mesh, 5-speed

Final transmission




Alu semi-double cradle

Front suspension system

Upside-down telescopic fork

Front travel

300 mm

Caster angle



118 mm

Rear suspension system

Swingarm, (link suspension)

Rear travel

315 mm

Front brake

Single Disc, Ø 250 mm

Rear brake

Single Disc, Ø 245 mm

Front tyre

80/100-21 51M

Rear tyre

110/90-19 62M


Overall length

2,184 mm

Overall width

827 mm

Overall height

1,309 mm

Seat height

997 mm

Wheel base

1,481 mm

Minimum ground clearance

385 mm

Wet weight (including full oil and fuel tank)

103 kg

Fuel tank capacity

8.0 litres

Oil tank capacity

0.8 litres