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.
 2007 Yamaha YZ250F | |
| Manufacturer | Yamaha Motor Company |
|---|---|
| Production | 2001-present |
| Class | Motocross |
| Engine | 249 cc (15.2 cu in) single-cylinder, water-cooled, four-stroke, DOHC |
| Bore / stroke | 77 mm × 53.6 mm (3.03 in × 2.11 in) |
| Power | 39hp[1] |
| Torque | 21 ft·lbf[1] |
| Transmission | 5-speed |
| Suspension | KYB |
| Brakes | disc (front,back) |
| Tires | 80/100-21, 100/90-19 |
| Wheelbase | 57.8 inches |
| Dimensions | L: 85 inches W: 32.5 inches H: 51.2 inches |
| Seat height | 38.7 inches |
| Weight | 204 lb (93 kg) (dry) |
| Fuel capacity | 1.6 Gallons (2024 Model) |
| Related | Yamaha 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
edit| 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
edit
Wikimedia Commons has media related to Yamaha YZ.
References
edit- ^ a b Dirck Edge, "Yamaha's 2001 YZ250F: The Horsepower Mystery", MotorcycleDaily.com, retrieve March, 2007
- ^ Dirck Edge, "2001 Yamaha YZ250F: MD Ride Review", MotorcycleDaily.com, retrieve March, 2007
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