| MODEL | HYOSUNG RT 125D 2008 |
| Year | 2008 |
| Engine Type | Four stroke, single cylinder |
| Displacement / Capacity | 124 cc / 7.6 cu-in |
| Bore X Stroke | 57 x 48.8 mm |
| Compression Ratio | 9.8:1 |
| Cooling System | Air cooled |
| Max Power | 10 kW / 13.5 hp @ 8500 rpm |
| Max Torque | 9.9 Nm / 7.3 lb-ft @ 7500 rpm |
| Ignition | Electronic |
| Induction | Carburettor (Sung Lim PD) |
| Start System | Electric & kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Upside down telescopic fork, 250 mm wheel travel |
| Rear Suspension | Swingarm, 200 mm wheel travel |
| Front Brakes | Single 240 mm disc |
| Rear Brakes | 130 mm drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 780 mm |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 125 kg |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 130/80-18 |
| Rear Tyre | 180/80-14 |
| FUEL SYSTEM | |
| Fuel Capacity | 8 Litres / 2.1 US gal |
| Fuel Consumption | — |
| Top Speed | — |
A 125 cc air-cooled single from Hyosung's small-capacity range, with a lower seat than the RX 125 enduro. It uses a five-speed gearbox, chain drive and a front disc with rear drum.
