Yamaha WR tech info
Yamaha WR description
2014 Yamaha WR250R, BRAND NEW 2014 - Directly descended from our YZ motocrossers and WR off-road machines, the 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. 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. A 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 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, including a large 250mm 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.
Yamaha WR for Sale
- 2011 yamaha wr450f dirt bike (US $5,999.00)
- 2014 yamaha wr450f (US $8,290.00)
- 2008 yamaha wr250r dual sport (US $4,200.00)
- 2012 yamaha wr250r dual sport (US $5,695.00)
- 2012 yamaha wr450f dirt bike (US $6,199.00)
- 2006 yamaha wr250f dirt bike (US $3,495.00)
Moto blog
You want a nice little car, you do.
Wed, 08 Sep 2010We ran a couple of stories last week - both, coincidentally, about new Kawasakis. One was the first peek of the new ZX10R – hot stuff you’d imagine – the other, the new W800 retro parallel twin. I suppose it shouldn’t have shocked us, which story was most popular in terms of hits but it really does mark a seismic shifts in British biking attitudes that the W800 story doubled the hits of the ZX10 piece.
Video: Barry Sheene's 500 stroker on the Visordown stage
Mon, 30 Nov 2009We've got a real treat for you on the Visordown stage at the NEC Bike Show. It's the ridiculously gorgeous Akai Yamaha, ridden by Barry Sheene and now owned by Chris Wilson. Niall Mackenzie and Jamie Whitham fire it up 3 times a day, just before one of our feature shows.
Still Time to Enter the Yamaha Supercross Sweepstakes
Thu, 14 Mar 2013The 2013 Supercross season may be halfway over, but it’s not too late to enter the Yamaha Supercross Sweepstakes. One lucky family will win a Yamaha Family Prize Pack, featuring some of Yamaha’s hottest off-road products and $2500 for accessories. The Family Prize Pack is worth more than $18,000 and includes one of each of the following!
Yamaha WR by State
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