2004 Yamaha XT 660 R specifications

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

Technical specifications

Displacement	659.0 ccm (40.21 cubic inches)
Engine type	Single cylinder, four-stroke
Power	48.0 HP (35.0 kW )) @ 6000 RPM
Torque	58.4 Nm (6.0 kgf-m or 43.1 ft.lbs) @ 5250 RPM
Compression	10.0:1
Bore x stroke	100.0 x 84.0 mm (3.9 x 3.3 inches)
Valves per cylinder	4
Fuel system	Injection
Cooling system	Liquid
Transmission type	Chain (final drive)
Front suspension	Telescopic fork, diameter 43 mm
Rear suspension	Monocross with linkage
Front brakes	Single disc
Rear brakes	Single disc
Front tyre	90/90-M21
Rear tyre	130/80-M17
Dry weight	165.0 kg (363.8 pounds)
Seat height	855 mm (33.7 inches) If adjustable, lowest setting.
Overall height	1235 mm (48.6 inches)
Overall length	2240 mm (88.2 inches)
Overall width	850 mm (33.5 inches)
Ground clearance	200 mm (7.9 inches)
Wheelbase	1500 mm (59.1 inches)

Source: Bikez: XT 660 R, 2004. Retrieved 2026-09-19. Match confidence: exact.

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