The Yamaha YZ250F is a motocross motorcycle first released in 2001 by Yamaha. It features a DOHC, four-stroke engine and initially had a steel frame and subframe in 2001-2002. In 2003 it received an aluminum subframe, which was replaced in the 2006 model with an all-aluminum frame.

YZ250-F
2007 Yamaha YZ250F
ManufacturerYamaha Motor Company
Production2001-present
ClassMotocross
Engine249 cc (15.2 cu in) single-cylinder, water-cooled, four-stroke, DOHC
Bore / stroke77 mm × 53.6 mm (3.03 in × 2.11 in)
Power39hp[1]
Torque21 ft·lbf[1]
Transmission5-speed
SuspensionKYB
Brakesdisc (front,back)
Tires80/100-21, 100/90-19
Wheelbase57.8 inches
DimensionsL: 85 inches
W: 32.5 inches
H: 51.2 inches
Seat height38.7 inches
Weight204 lb (93 kg) (dry)
Fuel capacity1.6 Gallons (2024 Model)
RelatedYamaha YZ450F
Yamaha WR250F

The YZ250F has been praised for combining the broad-power characteristics of a four-stroke engine with the light handling more common in smaller, 125 cc two-stroke motorcycles.[2]

Despite the similar name to the YZ250, very few parts have been shared between the models through their history.

Significant advances

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2003 Automatic decompression exhaust cam
2006 Aluminium frame
2008 New engine
2010 New engine layout, with lower center of gravity
2014 Rear slant cylinder, 4-Valve head, Fuel Injection
2019 Electric starter

See also

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References

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  1. ^ a b Dirck Edge, "Yamaha's 2001 YZ250F: The Horsepower Mystery", MotorcycleDaily.com, retrieve March, 2007
  2. ^ Dirck Edge, "2001 Yamaha YZ250F: MD Ride Review", MotorcycleDaily.com, retrieve March, 2007