Yamaha WR426: history, specs, pictures

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Yamaha WR426
Also called WR426F, WR 426 F, WR 426
Production 2001 - 2002
Class Enduro
Predecessor Yamaha WR400
Successor Yamaha WR450
single cylinder, four-stroke
Bore / Stroke 95.0mm x 60.1mm
Top Speed 87 mph
Horsepower 46.0 HP (34.3 KW) @ 9800RPM
Torque 29.5 ft/lbs (40.0 Nm) @ 7800RPM
Fuel System carburetor
Spark Plug NGK CR8E
Transmission Gear box: 5-speed
Final Drive: chain
Brakes Front: single disc
Rear: single disc
Front Tire 90/90-21
Rear Tire 130/90-18
Wheelbase 58.66 inches (1490 mm)
Length 89.37 inches (2270 mm)
Width 32.87 inches (835 mm)
Height 51.3 inches (1303 mm)
Seat Height 39.29 inches (998 mm)
Weight 248.02 pounds (112.5 Kg) (dry), 122.0 kg (wet)
Oil Filter K&N KN-142
Recommended Oil Yamalube 10w-40
Fuel Capacity 2.11 Gallon (8.00 Liters)
Manuals Service Manual

The Yamaha WR426F was a single cylinder, four-stroke Trail motorcycle produced by Yamaha between 2001 and 2002. Max torque was 29.5 ft/lbs (40.0 Nm) @ 7800 RPM. Claimed horsepower was 46.0 HP (34.3 KW) @ 9800 RPM.

Engine[edit | edit source]

The engine was a liquid cooled single cylinder, four-stroke. A 95.0mm bore x 60.1mm stroke result in a displacement of just 426.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin cam (dohc).

Drive[edit | edit source]

The bike has a 5-speed transmission.

Chassis[edit | edit source]

It came with a 90/90-21 front tire and a 130/90-18 rear tire. Stopping was achieved via single disc in the front and a single disc in the rear. The WR426F was fitted with a 2.11 Gallon (8.00 Liters) fuel tank. The bike weighed just 248.02 pounds (112.5 Kg). The wheelbase was 58.66 inches (1490 mm) long.

2002[edit | edit source]

2002 Yamaha WR426 in Blue
2002 Yamaha WR426 in Blue
2002 Yamaha WR426 in Blue

In Media[edit | edit source]