Yamaha WR450F (2005-06)

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The Yamaha WR 450F is a 2005-06 motorcycle with a liquid-cooled, 449cc, four-stroke, single-cylinder DOHC engine. It has a compression ratio of 12.5:1, a wet sump lubrication system, and a 39mm Keihin FCR flat-slide throttle position sensor. The bike has a maximum power of 58 horsepower at 9000 rpm and a maximum torque of 49 Nm at 7000 rpm. The WR 450F has a five-speed transmission and a “O” ring chain final drive. The bike has a steel, single cradle frame, with a 46mm Kayaba inverted telescopic fork front suspension and a Kayaba single shock rear suspension. The front wheel travel is 300mm, while the rear has 318mm of travel, and the bike has a ground clearance of 365mm. The WR 450F has a single 250mm disc 4-piston caliper front brake and a single 245mm disc 2-piston caliper rear brake. It has an 80/100-21 front tire and a 110/100-18 rear tire. The bike is 2175mm long, 825mm wide, and 1300mm tall, with a wheelbase of 1485mm and a seat height of 998mm. The dry weight of the bike is 112.5 kg, and the wet weight is 122 kg. It has a fuel capacity of 8 liters or 2.1 US gallons.

Technical specifications:

Make Model: Yamaha WR 450F

Year: 2005 – 06


Engine: Four stroke, single cylinder, DOHC, 5 titanium valve per cylinder.
Capacity: 449 cc / 27.4 in
Bore x Stroke: 95 x 63.4 mm
Cooling System: Liquid cooled
Compression Ratio: 12.5:1
Lubrication: Wet Sump
Induction: 39mm Keihin FCR flat-slide throttle position sensor
Ignition: Digital CDI
Starting: Electric / Kick-starter
Max Power: 58 hp / 42.3 kW @ 9000 rpm
Max Torque: 49 Nm / 33.1 lb-ft @ 7000 rpm
Clutch: Wet, multiple discs, cable operated
Transmission: 5 Speed
Final Drive: “O” ring Chain
Frame: Steel, Single cradle frame

Front Suspension: 46mm Kayaba inverted telescopic fork, compression and rebound damping adjustable
Front Wheel Travel: 300 mm / 11.8 in
Rear Suspension: Fully adjustable Kayaba single shock, 315mm wheel travel, separate speed compression adjustment
Rear Wheel Travel: 318 mm / 12.4 in
Front Brakes: Single 250mm disc 4 piston caliper
Rear Brakes: Single 245mm disc 2-piston caliper
Front Tyre: 80/100-21
Rear Tyre: 110/100-18
Dimensions: Length 2175 mm / 85.6 in Width 825 mm / 32.5 in Height 1300 mm / 51.2 in
Wheelbase: 1485 mm / 58.5 in
Ground Clearance: 365 mm / 14.3 in
Seat Height: 998 mm / 39.3 in
Dry Weight: 112.5 kg / 248 lbs
Wet Weight: 122 kg / 268 lbs
Fuel Capacity: 8 Liters / 2.1 US gal

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