Yamaha WR450F 2 (2004)

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The Yamaha WR 450F 2-Trac motorcycle was produced in 2004 and features a four-stroke, single-cylinder engine with 449cc capacity and a liquid cooling system. The engine has a compression ratio of 12.5:1 and is equipped with a 39mm Keihin FCR flat-slide throttle position sensor and digital CDI ignition. The motorcycle has a maximum power output of 58 horsepower at 9000 rpm and a maximum torque of 49 Nm at 7000 rpm. It has a wet, multiple-disc clutch and a 5-speed transmission, with final drive provided by an “O” ring chain. The frame is made of steel and has a single cradle design, with the front suspension featuring a 46mm Kayaba inverted telescopic fork that is adjustable for compression and rebound damping. The rear suspension is fully adjustable and uses a Kayaba single shock with separate speed compression adjustment. The motorcycle has a front wheel travel of 300mm and a rear wheel travel of 318mm, with front and rear brakes consisting of single discs with 4 piston and 2 piston calipers, respectively. The front tire is 80/100-21 and the rear tire is 110/100-18. The motorcycle measures 2175mm in length, 825mm in width, and 1300mm in height, with a wheelbase of 1485mm and ground clearance of 365mm. The seat height is 998mm and the fuel capacity is 8 liters.

Technical specifications:

Make Model: Yamaha WR 450F 2-Trac

Year: 2004


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
Fuel Capacity: 8 Liters / 2.1 USgal

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