YZ250 - Ultimate 2-stroke

Featuring a lightweight long-stroke engine that delivers an instant hit of free-revving power, the YZ250 is today’s ultimate 2-stroke race bike. And for 2009 the bike’s high-tech aluminium chassis comes with new lightweight wheel rims that reduce unsprung weight for enhanced handling and suspension performance. New speedblock graphics give that factory look – and a special new seat design delivers just the right balance of grip and rider mobility. With its punchy 2-stroke power, superb agility and low weight, the latest YZ250 is built to deliver a unique and exciting riding experience. YZ250. The genuine original.

Engine
Engine type	Liquid-cooled, 2-stroke, forward-inclined single cylinder, reed valve, with YPVS
Displacement	249 cc
Bore x stroke	66.4 x 72.0 mm
Compression ratio	8.9 - 10.6 : 1
Lubrication system	Premix
Fuel System	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
Fuel tank capacity	8 L
Oil tank capacity	0.8 L
Chassis
Chassis:	Alu semi-double cradle
Front suspension system	Telescopic forks
Front travel	300 mm
Rear suspension system	Swingarm (link suspension)
Rear travel	315 mm
Caster angle	27.1º
Trail	118 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
Length	2,184 mm
Width	827 mm
Height	1,309 mm
Seat height	997 mm
Wheel base	1,481 mm
Minimum ground clearance	385 mm
Wet weight	103.9 kg

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