Enduro Bikes
2006Yamaha XT660R
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The 2006 Yamaha XT660R is a single-cylinder trail bike for road and light off-road use. Its liquid-cooled 659cc single makes 48 hp and 58.4 Nm through a five-speed gearbox and chain. An 855 mm seat, 181 kg wet weight and 15-litre tank make it a tough, versatile machine.
- Capacity
- 659.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 165.0 kg
- Seat height
- 855 mm
- Power
- 48.0 HP (35.3 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built primarily as a big single-cylinder enduro for mixed on- and off-road use rather than outright speed or long-distance cruising.
- Built for
- A rugged, torque-driven single with a playful, agile feel that rewards a rider who enjoys standing on the pegs and tackling rough terrain over one who wants smooth highway cruising.
- Not ideal for
- Not ideal for riders seeking high-speed touring comfort, passenger-friendly ergonomics, or track-day performance.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 659.0 ccm
- Power
- 48.0 HP (35.3 kW)
- Torque
- 58.4 Nm (6.0 kgf-m)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.2909 HP/kg (dry)
- Bore x stroke
- 100.0 x 84.0 mm
- Compression
- 10.0:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- TCI
- Valves per cylinder
- 4
- Lubrication system
- Wet sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, multiple-disc coil spring
Dimensions & weight
- Wheelbase
- 1500 mm
- Overall length
- 2240 mm
- Overall width
- 850 mm
- Overall height
- 1235 mm
- Seat height
- 855 mm
- Dry weight
- 165.0 kg
- Wet weight
- 181.0 kg
- Fuel capacity
- 15.00 litres
- Ground clearance
- 200 mm
- Oil capacity
- 2.90 litres
Chassis & suspension
- Frame
- Steel tube, diamond shaped
- Front suspension
- Telescopic fork, diameter 43 mm
- Rear suspension
- Monocross with linkage
- Front wheel travel
- 225 mm
- Rear wheel travel
- 200 mm
- Rake (fork angle)
- 27.0°
- Trail
- 107 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 298 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 245 mm
- Front tyre
- 90/90-M21
- Rear tyre
- 130/80-M17
Other
- Color options
- Racing blue, Yamaha black
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2004 | 2006 | 2007 | 2010 | 2012 | 2015 |
|---|---|---|---|---|---|---|
| Capacity | 659 cc | 659 cc | 660 cc | 660 cc | 660 cc | 660 cc |
| Dry weight | 165 kg | 165 kg | 172 kg | 169 kg | 165 kg | 165 kg |
| Seat height | 855 mm | 855 mm | 865 mm | 865 mm | 875 mm | 875 mm |
| Fuel capacity | 15 L | 15 L | 15 L | 15 L | 15 L | 15 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Yamaha XT660R?
The 2006 Yamaha XT660R has a Capacity of 659.0 ccm (40.21 cubic inches).
What engine power does the Yamaha XT660R have?
The 2006 Yamaha XT660R has a Power of 48.0 HP (35.3 kW).
How many gears does the Yamaha XT660R have?
The 2006 Yamaha XT660R has a Gearbox of 5-speed.
What is the torque of the Yamaha XT660R?
The 2006 Yamaha XT660R has a Torque of 58.4 Nm (6.0 kgf-m or 43.1 ft.lbs).
How much does the Yamaha XT660R weigh?
The 2006 Yamaha XT660R has a Dry weight of 165.0 kg (363.8 pounds).
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