|
Make Model |
Yamaha WR 250R |
|
Year |
2008 |
|
Engine |
liquid cooled, four stroke, single cylinder, DOHC, 5 valve, . Dry Sump |
|
Capacity |
249 |
| Bore x Stroke | 77 x 53.6 mm |
| Compression Ratio | 11.8:1 |
|
Induction |
Electronic fuel injection |
|
Ignition / Starting |
TCI / electric |
|
Max Power |
22.6 kW 0.7 PS @ 10000 rpm |
|
Max Torque |
23.7 Nm 2.42 kg-m @ 8000 rpm |
|
Transmission / Drive |
5 Speed / chain |
|
Front Suspension |
Telescopic forks, 280mm wheel travel. |
|
Rear Suspension |
Swingarm (link suspension) 280mm wheel travel. |
|
Front Brakes |
Single 250mm disc |
|
Rear Brakes |
Single 230mm disc |
|
Front Tyre |
80/100 -21 |
|
Rear Tyre |
120/80 -18 |
| Seat Height | 810 mm |
|
Dry-Weight |
126 kg |
|
Fuel Capacity |
7.6 Litres |
| Consumption average | 28.0 km/lit |
|
Standing ¼ Mile |
16.2 sec |
|
Top Speed |
131.9 km/h |
| Reviews | 2smoto.com |
Features
- Directly descended from our YZ motocrossers and WR off-road machines—even the original Yamaha YA-1 of 1955—the all-new WR250R is here to make Yamaha’s off-road prowess street accessible.
- Not exactly an enduro model and not a streetbike either, the WR250R is for riders who ride off-road more than on. Its sibling, the supermoto-inspired WR250X, is for riders who spend more time on pavement.
Engine:
- Fresh-sheet design 250cc liquid-cooled, DOHC engine with two titanium intake valves and two steel exhausts, forged piston and plated cylinder for outstanding durability.
- Pentroof combustion chamber with downdraft-type straight intake helps make excellent power across the rev band, with maximum power at 10,000 rpm.
- First use of fuel injection on a 250 Yamaha on/off-road bike. The system relies on input from a crank sensor, intake air pressure sensor and throttle position sensor feeding a compact ECU to provide optimum combustion.
- An ECU-controlled EXUP exhaust valve, along with an electronic intake control valve, broadens the powerband.
- Large titanium intake valves with WPC processed high lift cams, a treatment in which the surface is sprayed with fine powder at over 100 meters per second to increase surface hardness.
- Three-axis engine layout keeps the engine compact. Wet sump tucks between frame rails to keep the engine height down.
- Rare earth-type ACM alternator keeps the weight down while providing all the current needed to run the FI and lighting systems.
- Direct ignition coil sits atop the spark plug—another first on a Yamaha on/off-road model.
- Six-speed gearbox provides a wide spread of ratios, with shower-type lubrication for reliability. A special light-action clutch makes shifting a snap.
- Tucked-in, three-chamber muffler keeps the mass concentration up and the bike quiet.
- Electric start only: Leaving off the kickstarter keeps it light and simple.
Chassis/Suspension:
Additional Features:
- A slim, steel fuel tank is shaped with knee grip in mind, and the entire ergonomic layout is designed to make the rider feel like part of the bike.
- Narrow, YZ-inspired seat features gripper-type cover for great seat-of-the-pants feel. Seat height is 36.6 inches.
- WR enduro-style instrument panel provides excellent visibility in spite of the compact size. Basic mode provides speed, clock, tripmeter and self-diagnostic function. Measurement mode includes stopwatch, distance-compensating tripmeter, etc.
- Minimalist front and rear fenders are designed for function, simplicity and lightness.
- Bodywork with separate radiator heat outlet helps keep engine and rider cool.
- Lightweight headlight and LED taillight maximize visibility and draw less current.
- Adjustable front brake lever.
