Yamaha XT 660 X Supermotard - 2004 Specifications and Reviews

The 2004 Yamaha XT 660 X is a versatile supermotard that appeals to riders seeking a practical blend of street performance and off-road capability. Powered by a 659cc liquid-cooled twin engine delivering 47 horsepower, it excels at urban commuting and weekend adventures on varied terrain. Known for its lightweight agility, comfortable ergonomics, and genuine dual-sport character, it's ideal for riders wanting honest, manageable performance without unnecessary complexity.

2004
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General information

CategorySuper motard
Year2004
ModelYamaha XT 660 X Supermotard
 
 

Engine and Transmission Specifications

Cooling systemLiquid
Fuel controlDOHC
Bore x stroke100.0 x 84.0 mm (3.9 x 3.3 inches)
Compression10.0:1
Torque58.40
Power47.33
Stroke4
Engine typeTwin
Capacity:659.00 ccm (40.21 cubic inches)

Physical measures and capacities

Wheelbase1,485 mm (58.5 inches)
Ground clearance200 mm (7.9 inches)
Overall width860 mm (33.9 inches)
Overall length2,131 mm (83.9 inches)
Overall height1,349 mm (53.1 inches)
Seat height875 mm (34.4 inches) If adjustable, lowest setting.
Dry weight173.0 kg (381.4 pounds)

Yamaha XT 660 X Supermotard dimensions and frame

Rear brakes diameter245 mm (9.6 inches)
Rear brakesSingle disc
Front brakes diameter320 mm (12.6 inches)
Front brakesSingle disc
Rear tyre dimensions160/60-17
Front tyre dimensions120/70-17
Rear suspension travel191 mm (7.5 inches)
Rear suspensionMonocross with linkage
Front suspension travel200 mm (7.9 inches)
Front suspensionTelescopic fork, diameter 43mm

Speed and acceleration

Power/weight ratio0.2736 HP/kg

Other specs

Color optionsRacing blue, Yamaha black

Rider Fit Visualizer

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 875mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with tip-toe one foot on the 2004 Yamaha XT 660 X Supermotard, with a relaxed knee angle of around 140 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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