Two New 2008 Bikes From Yamaha (WR and WRX)

 Yamaha is introducing the all new WR250R and WR250X.The WR250R is a dual purpose machine that blends a mixture of love for both the street and the dirt. The WR250X with it’s 17″ wheels is nothing short of SuperMoto inspired. Both bikes feature an all new DOHC four valve 250cc four-stroke engine, with a six speed transmission and FUEL INJECTION, a first for this class.
 
Directly descended from our YZ motocrossers and WR off-road machines?even the original Yamaha YA-1 of 1955?the all-new WR250R & WR250X were designed 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.
 
Look for retail prices as well as more informational on additional new Yamaha models here soon.
Yamaha WR250R
Features:
? 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:
? YZ / WR250-inspired semi-double-cradle frame uses a
main frame of cast and forged aluminum sections, with
high-strength steel downtubes 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 10.6 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 reduce unsprung weight and
provide excellent performance. Rear pedal is forged aluminum.
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.
YAMAHA WR250X


? 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 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 plug?another first on a
Yamaha on-off road model.
? Six-speed gearbox provides a wide spread of ratios, with showertype
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.

CHASSIS/SUSPENSION:

? 17-inch wheels mount radial street rubber in 110 front and
140mm rear widths and help lower the seat approximately 1.4
inches 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.
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 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.
? 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.
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