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 |
