| Attribute | Value |
| General |
| Production from | 2020 year |
| Make | Yamaha |
| Model | Yamaha YS125 |
| Category | Allround |
| Engine and transmission |
| Engine type | Single cylinder, two-stroke |
| Valves per cylinder | Add |
| Fuel system | Carburettor |
| Engine details | Reed-valve-inducted |
| Displacement | 125 cm³ |
| Power | 7.6 kw |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Liquid |
| Transmission type,final drive | Chain |
| Torque | 10.8 Nm |
| Bore | 54.4 mm |
| Stroke | 57.9 mm |
| Gearbox | 6-speed |
| Greenhouse gases | Add |
| Fuel control | Single Overhead Cams (SOHC) |
| Emission details | Add |
| Driveline | Add |
| Ignition | CDI |
| Clutch | O-ring chain |
| Lubrication system | Wet Sump |
| Compression | 10.0:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | Telescopic fork |
| Rear suspension | Swing arm |
| Front brakes | Single disc. Hydraulic. |
| Rear brakes | Expanding brake (drum brake). Hydraulic. |
| Diameter | 130 mm |
| Frame type | Add |
| Front tyre | 2.75-18 |
| Rear tyre | 100/80-18 |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | 120 mm |
| Rear wheel travel | 112 mm |
| Trail | 117 mm |
| Rake (fork angle) | 26.8 degree |
| Other |
| Battery capacity | Add |
| Starter | Electric |
| Color options | |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,320 mm |
| Kerb weight | 129 kg |
| Dry weight | Add |
| Power/weight ratio | Add |
| Overall height | 1,050 mm |
| Overall length | 2,005 mm |
| Overall width | 735 mm |
| Seat height | 795 mm |
| Alternate seat height | Add |
| Ground clearance | 150 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 | 14 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |