| Model: | Yamaha XT660R |
| Engine and transmission | |
| Displacement: | 660.00 ccm (40.27 cubic inches) |
| Engine type: | Single cylinder, four-stroke |
| Power: | 47.33 HP (34.5 kW)) @ 8500 RPM |
| Torque: | 60.00 Nm (6.1 kgf-m or 44.3 ft.lbs) @ 6100 RPM |
| Compression: | 10.0:1 |
| Bore x stroke: | 100.0 x 84.0 mm (3.9 x 3.3 inches) |
| Fuel system: | Injection |
| Fuel control: | Single Overhead Cams (SOHC) |
| Ignition: | TCI |
| Lubrication system: | Dry sump |
| Cooling system: | Liquid |
| Gearbox: | 5-speed |
| Transmission type, final drive: |
Chain |
| Clutch: | Wet, multiple-disc coil spring |
| Chassis, suspension, brakes and wheels | |
| Frame type: | Steel tube, diamond shaped |
| Front suspension: | Telescopic forks |
| Front wheel travel: | 130 mm (5.1 inches) |
| Rear suspension: | Swingarm (monocross) |
| Rear wheel travel: | 120 mm (4.7 inches) |
| Front tyre: | 90/90-M21 |
| Rear tyre: | 130/80-M17 |
| Front brakes: | Single disc |
| Front brakes diameter: | 298 mm (11.7 inches) |
| Rear brakes: | Single disc |
| Rear brakes diameter: | 245 mm (9.6 inches) |
| Physical measures and capacities | |
| Dry weight: | 172.0 kg (379.2 pounds) |
| Power/weight ratio: | 0.2752 HP/kg |
| Seat height: | 865 mm (34.1 inches) If adjustable, lowest setting. |
| Overall height: | 1,230 mm (48.4 inches) |
| Overall length: | 2,240 mm (88.2 inches) |
| Overall width: | 845 mm (33.3 inches) |
| Ground clearance: | 210 mm (8.3 inches) |
| Wheelbase: | 1,505 mm (59.3 inches) |
| Fuel capacity: | 15.00 litres (3.96 gallons) |
| Other specifications | |
| Starter: | Electric |
