WR 426 F

2001 Yamaha WR 426 F Technical Analysis & Specification Breakdown

Built around Yamaha's enduro - offroad motorcycle platform, the 2001 Yamaha WR 426 F relies on a 426 cc (26 cu in) liquid-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 47 HP (34.3 kW) at 9,800 rpm while maximum torque reaches 40 Nm (29.5 lb-ft) at 7,800 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 110.3 HP per liter and a 2,000 rpm working window between peak torque (7,800 rpm) and peak power (9,800 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the WR 426 F measures 122 kg (269 lbs) wet (curb), translating to a power-to-weight ratio of 0.39 HP/kg (2.6 kg per horsepower). Rider ergonomics and chassis geometry center around a 960 mm (37.8 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,490 mm (58.7 in) wheelbase engineered for balanced agility and highway composure. The 8-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Yamaha archive, this model family spans 2 indexed model years from 2001 to 2002, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.