YZ250

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.

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YZ250
YZ250  
Engine  
Engine type liquid-cooled, 2-stroke, Forward-inclined single cylinder, reed valve with YPVS
Displacement 249cc
Bore x stroke 66.4 mm x 72.0 mm
Compression ratio 8.9 ~ 10.6 : 1
Lubrication system Premix
Carburettor Keihin PWK38S/1
Clutch Type Wet, multiple-disc coil spring
Ignition system CDI
Starter system Kick
Transmission system Constant Mesh, 5-speed
Final transmission Chain
   
Chassis  
Frame Alu semi-double cradle
Front suspension system Upside-down telescopic fork
Front travel 300 mm
Caster Angle 27º
Trail 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
   
Dimensions  
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