| Attribute | Value |
| General |
| Production from | 2004 year |
| Make | Sym |
| Model | Sym HD 125 |
| Category | Scooter |
| Engine and transmission |
| Engine type | Single cylinder, four-stroke |
| Valves per cylinder | 4 |
| Fuel system | Add |
| Engine details | Add |
| Displacement | 125 cm³ |
| Power | 8.3 kw |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Liquid |
| Transmission type,final drive | Add |
| Torque | Add |
| Bore | 57 mm |
| Stroke | 48.8 mm |
| Gearbox | Add |
| Greenhouse gases | Add |
| Fuel control | Add |
| Emission details | Add |
| Driveline | Add |
| Ignition | Add |
| Clutch | Add |
| Lubrication system | Add |
| Compression | 10.5:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | Add |
| Rear suspension | Add |
| Front brakes | Single disc |
| Rear brakes | Single disc |
| Diameter | 130 mm |
| Frame type | Pipe under bone |
| Front tyre | 100/80-16 |
| Rear tyre | 120/80-16 |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | Add |
| Rear wheel travel | Add |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Add |
| Color options | |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,385 mm |
| Kerb weight | Add |
| Dry weight | 125 kg |
| Power/weight ratio | 0.0664 |
| Overall height | 1,165 mm |
| Overall length | 2,064 mm |
| Overall width | 706 mm |
| Seat height | Add |
| Alternate seat height | 807 |
| Ground clearance | Add |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | 108 km/h |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 8.3 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |