Yamaha XT660R - 2008 Specifications and Reviews

The 2008 Yamaha XT660R is a nimble super motard that appeals to riders seeking fun, accessible performance in urban and light off-road environments. Its fuel-injected 660cc single-cylinder engine delivers responsive mid-range torque ideal for street play and everyday commuting. Known for its versatile handling and manageable power delivery, it serves as an excellent platform for both novice and experienced riders exploring motard riding.

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General information

CategorySuper motard
Year2008
ModelYamaha XT660R
 
 

Engine and Transmission Specifications

ClutchWet, multiple-disc coil spring
Transmission type,final driveChain
Gearbox5-speed
Cooling systemLiquid
Lubrication systemDry sump
IgnitionTCI
Fuel controlSOHC
Fuel systemInjection
Bore x stroke100.0 x 84.0 mm (3.9 x 3.3 inches)
Compression10.0:1
Torque60.00 Nm (6.1 kgf-m or 44.3 ft.lbs) @ 6100
Power47.33
Engine typeSingle cylinder, four-stroke
Capacity:660.00 ccm (40.27 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakes diameter245 mm (9.6 inches)
Rear brakesSingle disc
Front brakes diameter298 mm (11.7 inches)
Front brakesSingle disc
Rear tyre dimensions130/80-M17
Front tyre dimensions90/90-M21
Rear suspension travel120 mm (4.7 inches)
Rear suspensionSwingarm (monocross)
Front suspension travel130 mm (5.1 inches)
Front suspensionTelescopic forks
Frame typeSteel tube, diamond shaped
 
 

Physical measures and capacities

Fuel capacity15.00 litres (3.96 gallons)
Wheelbase1,505 mm (59.3 inches)
Ground clearance210 mm (8.3 inches)
Overall width845 mm (33.3 inches)
Overall length2,240 mm (88.2 inches)
Overall height1,230 mm (48.4 inches)
Seat height865 mm (34.1 inches) If adjustable, lowest setting.
Power/weight ratio0.2752 HP/kg
Dry weight172.0 kg (379.2 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterElectric

Performance Profile & Rider Fit

47.3 hp
Peak Power
5.8s
0-60 mph

Best For

Track25%
City60%
Cornering60%
Daily Riding55%
Touring40%
Passenger30%

Rider Profile

Best ForSuited to intermediate to experienced riders comfortable with a tall, torquey single-cylinder machine that demands active riding input.
PurposeBuilt primarily as a supermoto-styled enduro for mixed on/off-road use, mixing light dirt capability with sharp street handling.
Rider FitThe tall 875mm seat height and 165kg dry weight require reasonable rider height and confidence when standing or paddling at low speed.
CharacterA gutsy, characterful big single that rewards momentum-based riding with strong low-end torque and agile, narrow handling.
Not Ideal ForNot ideal for riders seeking high-speed touring comfort, plush ride quality, or a smooth two-up passenger experience.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2008 Yamaha XT660R Rider Ergonomics Assessment

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Feet:

At 865mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with tip-toe one foot on the 2008 Yamaha XT660R, 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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