|
|
 |
Red Bluff Yamaha
The YAMAHA WR250X Dual Sport Motorcycle - 2009
The cure for the common commute
Years of experience building advanced street and dirt bikes come together in the WR250X.
The power flows freely from its high-tech, fuel-injected DOHC engine. An hybrid aluminum
and steel frame ties 17 inch wheels with sticky radial street tires together. Feel free to
back it in. Estimated at 71 Miles per Gallon Fuel rating.
FEATURES
- Directly descended from our YZ motocrossers and WR off-road
machineseven the original Yamaha YA-1 of 1955the all-new WR250X is here to
make Yamahas off-road prowess street accessible.
- Not exactly an enduro, a supermoto or a sportbike, the WR250X is for
riders who ride mostly paved surfaces. Its sibling, the off-road inspired WR250R, is for
riders who spend more time in the dirt.
- The WR250X achieves fuel economy up to an estimated 71 mpg** with a
fuel tank that holds 2 gallons of gas.
|
- 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 have WPC coating, a surface 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 pluganother first on
a Yamaha on/off-road model.
- Six-speed gearbox provides a wide spread of ratios, with shower-type
lubrication for reliability. 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.
|
- 17-inch wheels mount radial street rubber in 110 front and 140mm
rear widths and help lower the seat approximately 1.4 inch compared to the WR250R.
- One-tooth smaller rear sprocket (13/42) works with the
smaller-diameter tires to bring out the WR250Xs strong-accelerating character.
- Stiffer springs front and rear and street-oriented damping settings
reduce pitch compared to the WR250R for excellent pavement performance.
- YZ/WR250-inspired semi-double-cradle frame uses a main frame of cast
and forged aluminum sections, with high-strength steel downtube for excellent strength and
rigidity characteristics.
- Asymmetrical swingarm provides excellent strength/rigidity balance
and a dynamic look. Cast aluminum crossmembers, extruded arms and a 22mm rear axle are
carefully tuned for optimum handling.
- Fully adjustable 46mm fork provides 10.6 inches of wheel travel. A
forged lower triple clamp and a cast upper one help give outstanding front-end feel. An
aluminum steering stem reduces weight.
- Linkage-mounted rear shock provides 10.4 inches of travel with
adjusters for compression damping, rebound damping and spring preloadand features a
14mm rod and 46mm cylinder for excellent damping and fade resistance.
- Wave brake rotors front and rear, including a large, 298mm front
disc, reduce unsprung weight and provide excellent performance. Rear pedal is forged
aluminum.
|
- 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 35.2 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.
- Separate clutch cover means easier serviceability.
- One-screw air filter serviceability.
- Adjustable front brake lever.
|
STATISTICS
| Type |
250cc liquid-cooled DOHC 4-stroke;4 valves |
 |
| Bore x Stroke |
77.0 x 53.6mm |
 |
| Compression Ratio |
11.8:1 |
 |
| Carburetion |
Fuel injection |
 |
| Ignition |
Direct ignition coil |
 |
| Transmission |
Constant-mesh 6-speed; multiplate wet clutch |
 |
| Final Drive |
Chain |
 |
 |
| Suspension/Front |
Inverted fork; fully adjustable, 10.6-in travel |
 |
| Suspension/Rear |
Single shock; fully adjustable, 10.6-in travel |
 |
| Brakes/Front |
Hydraulic single-disc brake, 298mm |
 |
| Brakes/Rear |
Hydraulic single-disc brake, 230mm |
 |
| Tires/Front |
110/70-17 |
 |
| Tires/Rear |
140/70-17 |
 |
 |
| Length |
83.1 in |
 |
| Width |
31.9 in |
 |
| Height |
46.9 in |
 |
| Seat Height |
35.2 in |
 |
| Wheelbase |
56.1 in |
 |
| Ground Clearance |
10.2 in |
 |
| Fuel Capacity |
2.0 gal |
 |
| Fuel Economy** |
71 mpg |
 |
| Wet Weight |
299 lb (CA 301 lb) |
 |
 |
| Warranty |
1 Year (Limited Factory Warranty) |
|
|