| Attribute | Value |
| General |
| Production from | 2009 year |
| Make | Yamaha |
| Model | Yamaha TT-R125LW |
| Category | Enduro / offroad |
| Engine and transmission |
| Engine type | Single cylinder, four-stroke |
| Valves per cylinder | Add |
| Fuel system | Carburettor. Mikuni VM20/1 |
| Engine details | Add |
| Displacement | 123.7 cm³ |
| Power | 7 kw |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Air |
| Transmission type,final drive | Chain |
| Torque | 9.9 Nm |
| Bore | 54 mm |
| Stroke | 54 mm |
| Gearbox | 5-speed |
| Greenhouse gases | Add |
| Fuel control | Single Overhead Cams (SOHC) |
| Emission details | Add |
| Driveline | Add |
| Ignition | CDI (digital) |
| Clutch | Wet, multiple-disc coil spring |
| Lubrication system | Wet sump |
| Compression | 10.0:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | Telescopic forks |
| Rear suspension | Swingarm (link suspension) |
| Front brakes | Single disc |
| Rear brakes | Expanding brake (drum brake) |
| Diameter | 110 mm |
| Frame type | Diamond shaped |
| Front tyre | 70/0-M19 |
| Rear tyre | 90/0-M16 |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | 180 mm |
| Rear wheel travel | 168 mm |
| Trail | 107 mm |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Electric & kick |
| Color options | |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,270 mm |
| Kerb weight | 84 kg |
| Dry weight | Add |
| Power/weight ratio | Add |
| Overall height | 1,085 mm |
| Overall length | 1,885 mm |
| Overall width | 795 mm |
| Seat height | 805 mm |
| Alternate seat height | Add |
| Ground clearance | 295 mm |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | Add |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 6 l |
| Oil capacity | 1.2 l |
| Width | Add |
| Height | Add |