2005 Yamaha WR450F Competition Model

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4Strokes
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2005 Yamaha WR450F Competition Model

Postby 4Strokes » Tue Jan 31, 2017 10:15 am

05wr450f.jpg
2005 Yamaha WR450F Competition Model

Yamaha’s off-road line up is second to none, and at the top of this line is the horsepower king – the 2005 Yamaha WR450F. The new WR450F features a multitude of changes, all aimed at making a faster, smoother, quicker-handling, easier to ride off-road racer.

To start with, the WR450F features a 10mm lower main-frame height, slimmer radiator shrouds, 20mm lower seat height (which is also lower), a narrower fuel tank, which all result in a lower center of gravity and a higher ability to move around on the bike for better handling all around. Adding to the bike’s rideability is the all-new clutch-lever shape, which provides more leverage to the clutch cable, which is routed more directly for 2005. The result is a much easier clutch pull, which makes long races that much easier on the rider. Add to that the electric start that has been standard on the WR450F for years, and it’s hard to imagine a more well-built and convenient off-road racebike. Make no mistake about it, this WR450F is a serious race machine, with tons of smooth, tractable power on tap at the flick of a wrist.

In addition, the newest WR450F comes with all-new 48mm forks, increasing the overall comfort for the rider who is in the saddle for hours at a time (as is typical at off-road events), while also improving handling significantly. The forks are beefy, but they’re also valved in such a way that they will soak up off-road obstacles – such as rocks, bumps and logs – with self-confidence.

What distinguishes the WR450F from its YZ brother is that it’s packed with additional accessories for the rider who chooses the desert and woods over motocross tracks. The WR450F features a 60-watt halogen headlight, a taillight, voltage regulator, tripmeter, 18-inch rear wheel, large-capacity gas tank, wide-ratio transmission and a U.S. Forest Service-approved spark arrestor. Add to that the AIS system for emissions, an all-new aluminum Renthal handlebar, aluminum exhaust muffler, a new lightweight swingarm, a smoother power delivery, and an all-new shorter brake routing for increased brake feel, and you have a complete package to support the rider who wants performance without sacrificing comfort, maneuverability and light weight.

Powering the WR450F is a 449cc, DOHC, five-valve, liquid-cooled, twin-cam motor with titanium valves. A 39mm Keihin FCR, with throttle position sensor (TPS) carburetor is designed to offer even better throttle response in a wide range of conditions. In addition, the WR450F features the “works-style” adjustable clutch perch (fully adjustable with no tools!) and lever for better response and superior feel.

Excel rims grace the WR450F in the front and rear (as with the YZ125 and YZ250), providing superb strength and light weight, and a light chain, lightweight hub, aluminum spoke nipples, and 18-inch Dunlop rear tire complete one of the most aggressive rear setups on a production machine today. Suggested Retail: $6,599 (USD).

Specifications
Engine Type: 449cc, liquid-cooled, 5-valve, DOHC, four-stroke, w/titanium valves, Digital CDI
Bore x Stroke: 95 x 63.4mm, Compression Ratio: 12.3:1
Carburetion: 39mm Keihin FCR flat-slide w/throttle position sensor
Transmission: Wide-ratio, 5-speed w/multi-plate wet clutch, Final Drive: #520 O-ring chain
Suspension/Front: 48mm Kayaba inverted telescopic fork w/adj comp & rebound damping; 11.8" travel
Suspension/Rear: Kayaba shock w/adj preload, comp & rebound. Separate hi/lo comp adj; 12" travel
Brakes, Front: 250mm floating disc | Rear: 245mm disc
Tires, Front: 80/100-21 Dunlop | Rear: 110/100-18 Dunlop
Dims: L 86.61", W 32.68", H 50.98", Wheelbase 58.46", Seat Height 38", Ground Clearance 14.57"
Dry Weight: 244 lbs.
Fuel Capacity: 2.1 gallons
Color: Team Yamaha Blue/White

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4Strokes
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Posts: 1224
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New for the 2005 Yamaha WR450F

Postby 4Strokes » Mon Dec 04, 2017 1:55 pm

  • 10mm lower main-frame height
  • Slimmer radiator shrouds
  • 20mm lower seat height (which is also lower)
  • Narrower fuel tank
  • All-new clutch-lever shape
  • All-new 48mm forks
  • All-new aluminum Renthal handlebar
  • New lightweight swingarm
  • All-new shorter brake routing for increased brake feel


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