Comparison of Yamaha XT660R 2008 and Yamaha XT 660 X 2006 [S]ave
| Attribute |  Yamaha XT 660 X 2006 × |  Yamaha XT660R 2008 × |
|---|---|---|
| General | ||
| Production from (year) | 2006 | 2008 |
| Make | Yamaha | Yamaha |
| Model | Yamaha XT 660 X | Yamaha XT660R |
| Category | Enduro / offroad | Super motard |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Fuel system | Injection | Injection |
| Displacement (cm³) | 660 | 660 |
| Power (kw) | 34.5 | 34.5 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Torque (Nm) | 58.4 | 60 |
| Bore (mm) | 100 | 100 |
| Stroke (mm) | 84 | 84 |
| Gearbox | - | 5-speed |
| Fuel control | Single Overhead Cams (SOHC) | Single Overhead Cams (SOHC) |
| Ignition | TCI | TCI |
| Clutch | Wet, multiple disc | Wet, multiple-disc coil spring |
| Lubrication system | Dry sump | Dry sump |
| Compression | 10.0:1 | 10.0:1 |
| Chassis | ||
| Front suspension | Telescopic fork | Telescopic forks |
| Rear suspension | Monocross with linkage | Swingarm (monocross) |
| Front brakes | Single disc | Single disc |
| Rear brakes | Single disc | Single disc |
| Diameter (mm) | 245 | 245 |
| Frame type | Front suspension system | Steel tube, diamond shaped |
| Front tyre | 90/90-21 | 90/90-M21 |
| Rear tyre | 130/80-17 | 130/80-M17 |
| Front wheel travel (mm) | 225 | 130 |
| Rear wheel travel (mm) | 160 | 120 |
| Other | ||
| Starter | Electric | Electric |
| Dimensions | ||
| Wheelbase (mm) | 1,505 | 1,505 |
| Dry weight (kg) | 165 | 172 |
| Power/weight ratio | 0.2091 | 0.2006 |
| Overall height (mm) | 1,230 | 1,230 |
| Overall length (mm) | 2,240 | 2,240 |
| Overall width (mm) | 850 | 845 |
| Seat height (mm) | 865 | 865 |
| Ground clearance (mm) | 210 | 210 |
| Performance | ||
| Fuel capacity (l) | 15 | 15 |
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