| Attribute | Value |
| General |
| Production from | 2007 year |
| Make | Hyosung |
| Model | Hyosung RT 125 D |
| Category | Allround |
| Engine and transmission |
| Engine type | Single cylinder, four-stroke |
| Valves per cylinder | 4 |
| Fuel system | Carburettor. Euro 3 |
| Engine details | Add |
| Displacement | 124.5 cm³ |
| Power | 9.8 kw |
| Max RPM | Add |
| Fuel consumption | 4 l/100km |
| Cooling system | Oil & air |
| Transmission type,final drive | Shaft drive (cardan) |
| Torque | Add |
| Bore | 57 mm |
| Stroke | 48.8 mm |
| Gearbox | Add |
| Greenhouse gases | 92.8 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Emission details | Add |
| Driveline | Add |
| Ignition | Digital |
| Clutch | Add |
| Lubrication system | Add |
| Compression | Add |
| Exhaust system | Add |
| Chassis |
| Front suspension | Telescopic |
| Rear suspension | Monoshock |
| Front brakes | Single disc. 2-piston caliper |
| Rear brakes | Expanding brake (drum brake) |
| Diameter | 130 mm |
| Frame type | Steel |
| Front tyre | 130/80-18 66P |
| Rear tyre | 180/80-14 78P |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | Add |
| Rear wheel travel | Add |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Electric |
| Color options | |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,350 mm |
| Kerb weight | 135 kg |
| Dry weight | 125 kg |
| Power/weight ratio | 0.0784 |
| Overall height | 1,125 mm |
| Overall length | 2,085 mm |
| Overall width | 840 mm |
| Seat height | 790 mm |
| Alternate seat height | Add |
| Ground clearance | 230 mm |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | 105 km/h |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 9.1 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |