Yamaha YZ250F

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

YZ250-F
2007 Yamaha YZF250-R
ManufacturerYamaha Motor Company
Production2001-present
PredecessorYamaha YZ125
ClassMotocross
Engine250 cc single-cylinder, water-cooled, four-stroke, DOHC
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 capacity1.8 gallons
RelatedYamaha YZ125

This combination leads to the YZ250F being 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]

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

See also

References
  1. 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
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