- Directly descended from our YZ motocrossers and
WR off-road machines—even the original Yamaha
YA-1 of 1955—the WR250X is here to make Yamaha’s
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.
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- 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.
- High lift cams have WPC 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 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. Special, light-action clutch
makes shifting a snap.
- Tucked-in, three-chamber muffler helps keep mass centralized
and the bike quiet.
- Electric start only: Leaving off the kickstarter keeps it light
and simple.
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- 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 WR250X’s 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 preload—and 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.
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- 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.
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