Yamaha WR250F

Yamaha WR250F

File:2002WR250F.jpg Dual-sported Yamaha WR250f from 2002.
Manufacturer	Yamaha Motor Company
Class	Off road, Enduro
Engine	246 cc (15.0 cu in) Single-cylinder; four-stroke, liquid-cooled, DOHC, 5 titanium valves
Bore / stroke	77.0 mm × 53.6 mm (3.03 in × 2.11 in)
Compression ratio	12.5:1
Ignition type	CDI
Transmission	Constant-mesh 5-speed; multiplate wet clutch, chain drive
Suspension	Front: Inverted telescopic fork; fully adjustable, 11.8 in (300 mm) travel Rear: single shock; fully adjustable, 12.2 in (310 mm) travel
Brakes	Front: hydraulic single disc brake, 250 mm Rear: hydraulic single disc brake, 45 mm
Tires	Front: 80/100-21 51M Rear: 100/100-18-59M
Wheelbase	58.3 in (1,480 mm)
Dimensions	L: 85.2 in (2,160 mm) W: 32.5 in (830 mm) H: 51.1 in (1,300 mm)
Seat height	38.6 in (980 mm)
Weight	256 lb (116 kg) (claimed) (wet)
Fuel capacity	2.1 US gal (7.9 L; 1.7 imp gal)
Fuel consumption	71 mpg-US (3.3 L/100 km; 85 mpg-imp)
Related	Yamaha YZ250F Yamaha WR450F Yamaha WR250R

The Yamaha WR250F is an off-road motorcycle made by Yamaha Motor Company. It has a 250 cc (15 cu in) liquid-cooled single nikasil coated cylinder engine. First offered in 2001, it shared many components and design concepts with the YZ250F motocross model. It is basically the YZ250F detuned slightly for more controllable power, with a headlight and lighting coil, softer suspension, a kickstand, lower noise specifications, larger radiators, and lower emissions. The WR in the name indicates a wide-ratio gear box common to most enduro or trail bikes and stands in contrast to the close-ratio gearbox essential to a motocross racer. Over the years the WR250F has benefited from the advances made in the YZ motocross version gaining advancements such as an aluminum frame and improved suspension.

Significant advances

2003	Automatic decompression exhaust cam and electric starting
2006	Digital display
2007	Aluminium frame
2014	Rear slant cylinder, Fuel Injection
2016