Yamaha XT660X - 2008 Specifications and Reviews
The 2008 Yamaha XT660X is a lightweight supermoto designed for versatile riders seeking an agile, manageable machine. Its 660cc single-cylinder engine delivers accessible power and torque, making it ideal for urban commuting and weekend road adventures. Known for its nimble handling and approachable performance, the XT660X appeals to both novice and experienced riders.
General information | |
| Category | Super motard |
| Year | 2008 |
| Model | Yamaha XT660X |
| | |
Engine and Transmission Specifications | |
| Clutch | Wet, multiple-disc coil spring |
| Transmission type,final drive | Chain |
| Gearbox | 5-speed |
| Cooling system | Liquid |
| Lubrication system | Dry sump |
| Ignition | TCI |
| Fuel control | SOHC |
| Fuel system | Injection |
| Bore x stroke | 100.0 x 84.0 mm (3.9 x 3.3 inches) |
| Compression | 10.0:1 |
| Torque | 60.00 Nm (6.1 kgf-m or 44.3 ft.lbs) @ 6100 |
| Power | 47.33 |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 660.00 ccm (40.27 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Rear brakes diameter | 245 mm (9.6 inches) |
| Rear brakes | Single disc |
| Front brakes diameter | 320 mm (12.6 inches) |
| Front brakes | Single disc |
| Rear tyre dimensions | 160/60-R17 |
| Front tyre dimensions | 120/70-R17 |
| Rear suspension travel | 120 mm (4.7 inches) |
| Front suspension travel | 130 mm (5.1 inches) |
| Frame type | Steel tube, diamond shaped |
Physical measures and capacities | |
| Fuel capacity | 15.00 litres (3.96 gallons) |
| Wheelbase | 1,490 mm (58.7 inches) |
| Ground clearance | 205 mm (8.1 inches) |
| Overall width | 860 mm (33.9 inches) |
| Overall length | 2,175 mm (85.6 inches) |
| Seat height | 875 mm (34.4 inches) If adjustable, lowest setting. |
| Power/weight ratio | 0.2674 HP/kg |
| Dry weight | 177.0 kg (390.2 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Starter | Electric |
Performance Profile & Rider Fit
47.3 hp
Peak Power
5.5s
0-60 mph
Best For
Track60%
City70%
Cornering85%
Daily Riding60%
Touring40%
Passenger35%
Rider Profile
| Best For | Best suited to riders with at least some prior experience, since the tall seat, supermoto-tuned chassis, and sharp handling reward confident, active riding. |
| Purpose | Built as a road-focused supermoto, this bike is meant for flicking through tight city streets and attacking twisty backroads rather than long-distance cruising or serious off-road work. |
| Rider Fit | The 865mm seat height and light 186kg weight favor taller or more athletic riders who can comfortably manage the bike at a stop and enjoy standing-up, aggressive body positioning. |
| Character | It suits a playful, corner-hungry rider who values sharp steering, sporty street handling, and a punchy single-cylinder engine over outright top speed or plush comfort. |
| Not Ideal For | It is not a good match for riders seeking a relaxed touring companion, heavy passenger carrying capability, or a highly capable off-road adventure machine. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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