43,669 bikes · 493 makes Add a bikeLog inRegister
Supermotos

2006Yamaha XT660X

Rate this bike
Click to vote

40 fields on record

The 2006 Yamaha XT660X is a supermoto for riders who want agile, lively handling on city streets. Its 660cc liquid-cooled single makes 47.3 hp and 58.4 Nm, with an 865 mm seat, a 189 kg wet weight and a 15-litre tank.

Capacity
660.0 ccm
Engine
Single, four-stroke
Gearbox
5-speed
Dry weight
165.0 kg
Seat height
865 mm
Power
47.3 HP (34.8 kW)
⇄ Compare with another bike + Add to garage All model years
Other years 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 44Agility 77Comfort 55Off-road 40Touring 45Road manners 68
Off-road & trail40%
Cornering75%
City riding70%
Daily riding65%
Touring45%
Two-up35%
Track35%
Best for
Designed as a supermoto-styled machine for punchy, playful riding on twisty tarmac and light urban duty rather than outright speed or long-distance touring.
Built for
A lively, single-cylinder torque-driven bike that feels agile, upright, and eager to flick through corners with minimal fuss.
Not ideal for
Not ideal for riders seeking high-speed highway cruising, plush two-up touring comfort, or serious off-road capability.

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 us
At 865mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with tip-toe one foot on the 2006 Yamaha XT660X, with a relaxed knee angle of around 140 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 821-900 mm — Long Legs →

Find bikes that fit your height →

Full specifications

Engine
Capacity
660.0 ccm
Power
47.3 HP (34.8 kW)
Torque
58.4 Nm (6.0 kgf-m)
Engine type
Single, four-stroke
Power/weight ratio
0.2867 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
Dry sump
Transmission
Gearbox
5-speed
Transmission type
Manual
Final drive
Chain
Clutch
Wet, multiple-disc coil spring
Dimensions & weight
Wheelbase
1505 mm
Overall length
2240 mm
Overall width
850 mm
Overall height
1230 mm
Seat height
865 mm
Dry weight
165.0 kg
Wet weight
189.0 kg
Fuel capacity
15.00 litres
Ground clearance
210 mm
Oil capacity
2.90 litres
Chassis & suspension
Front suspension
Telescopic fork
Rear suspension
Monocross with linkage
Front wheel travel
225 mm
Rear wheel travel
160 mm
Rake (fork angle)
26.0°
Trail
94 mm
Brakes & wheels
Front brakes
Single disc
Front brakes diameter
298 mm
Rear brakes
Single disc
Rear brakes diameter
245 mm
Front tyre
90/90-21
Rear tyre
130/80-17

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 20062008201120132015
Capacity 660 cc 660 cc 660 cc 660 cc 660 cc
Dry weight 165 kg 177 kg 177 kg 177 kg 177 kg
Seat height 865 mm 875 mm 865 mm 865 mm 865 mm
Fuel capacity 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

—
☆☆☆☆☆
Be the first to rate

Own one? Add it to My Garage and write an owner review with an Owner badge.

Common questions

What is the engine size of the Yamaha XT660X?

The 2006 Yamaha XT660X has a Capacity of 660.0 ccm (40.28 cubic inches).

What engine power does the Yamaha XT660X have?

The 2006 Yamaha XT660X has a Power of 47.3 HP (34.8 kW).

How many gears does the Yamaha XT660X have?

The 2006 Yamaha XT660X has a Gearbox of 5-speed.

What is the torque of the Yamaha XT660X?

The 2006 Yamaha XT660X has a Torque of 58.4 Nm (6.0 kgf-m or 43.1 ft.lbs).

How much does the Yamaha XT660X weigh?

The 2006 Yamaha XT660X has a Dry weight of 165.0 kg (363.8 pounds).

Shop this bike

Affiliate links

We may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.

Similar bikes

Same category, weighted similarity

More Yamaha Motorcycles