2002 Yamaha YZ 426 F specifications

Available technical data for this model and year. Specifications can vary by market and version.

Technical specifications

Displacement	426.0 ccm (25.99 cubic inches)
Engine type	Single cylinder, four-stroke
Engine details	Titanium valves
Power	47.0 HP (34.3 kW )) @ 9800 RPM
Torque	40.0 Nm (4.1 kgf-m or 29.5 ft.lbs) @ 7800 RPM
Compression	12.5:1
Bore x stroke	95.0 x 60.1 mm (3.7 x 2.4 inches)
Valves per cylinder	5
Fuel system	Carburettor. Keihin
Ignition	digital CDI
Cooling system	Liquid
Gearbox	5-speed
Transmission type	Chain (final drive)
Clutch	Wet, multiple discs, cable operated
Front suspension	Kayaba cartridge upside-down
Rear suspension	Kayba single shock
Front brakes	Single disc
Rear brakes	Single disc
Front tyre	80/100-21
Rear tyre	110/90-19
Dry weight	105.0 kg (231.5 pounds)
Seat height	998 mm (39.3 inches) If adjustable, lowest setting.
Overall height	1303 mm (51.3 inches)
Overall length	2171 mm (85.5 inches)
Overall width	827 mm (32.6 inches)
Ground clearance	375 mm (14.8 inches)
Wheelbase	1490 mm (58.7 inches)
Fuel capacity	8.00 litres (2.11 US gallons)

Source: Bikez: YZ 426 F, 2002. Retrieved 2026-09-19. Match confidence: exact.

Years listed are the entries held in this archive, rather than a complete production history.