Yamaha WR450F (2001-02)

The Yamaha WR 426F was produced from 2001-02 and features a four-stroke, single-cylinder, DOHC, 5-valve engine with a capacity of 449cc. It has a liquid cooling system and a compression ratio of 12.5:1. The bike is equipped with a 39mm Keihin FCR39H carburetor and digital CDI ignition, and is started by a kick. The maximum power output is 58.1 hp at 9000 rpm, with max torque of 49 Nm at 7000 rpm. The transmission has 5 speeds and the bike’s final drive is a chain. The front suspension is made up of 46mm Kayaba inverted telescopic forks, while the rear suspension is a fully adjustable Kayaba single shock with separate high and low-speed compression adjustment. The front and rear brakes are single 250mm and 245mm discs respectively. The bike has a wheelbase of 1490mm, a seat height of 960mm, and a ground clearance of 373mm. It has a dry weight of 114kg and an 8-liter fuel capacity. The bike is equipped with an 80/100-21 front tire and a 110/90-18 rear tire.

---

Technical specifications:

Make Model: Yamaha WR 426F

Year: 2001 – 02

Engine: Four stroke, single cylinder, DOHC, 5 valve

Capacity: 449 cc / 25.9 cu-in

Bore x Stroke: 95 x 60.1 mm

Cooling System: Lliquid cooled

Compression Ratio: 12.5:1

Induction: 39mm Keihin FCR39H carburetor

Ignition: Digital CDI

Starting: Kick

Max Power: 58.1 hp / 42.4 kW @ 9000 rpm

Max Torque: 49 Nm @ 7000 rpm

Transmission: 5 Speed

Final Drive: Chain

Front Suspension: 46mm Kayaba inverted telescopic forks compression and rebound damping adjustable

Front Wheel Travel: 300 mm / 11.8 in

Rear Suspension: Fully adjustable Kayaba single shock, 315mm wheel travel, separate high and low speed compression adjustment.

Rear Wheel Travel: 315 mm / 12.4 in

Front Brakes: Single 250mm disc

Rear Brakes: Single 245mm disc

Front Tyre: 80/100-21

Rear Tyre: 110/90-18

Rake: 27.2 degrees

Wheelbase: 1490 mm / 58.7 in

Seat height: 960 mm / 37.9 in

Ground Clearance: 373 mm / 14.7 in

Dry Weight: 114 kg / 251.3 lbs

Fuel Capacity: 8 Litres / 2.1 US gal