| Attribute | Value |
| General |
| Production from | 1999 year |
| Make | Aprilia |
| Model | Aprilia RS 125 |
| Category | Sport |
| Engine and transmission |
| Engine type | Single cylinder, two-stroke |
| Valves per cylinder | Add |
| Fuel system | Add |
| Engine details | Add |
| Displacement | 125 cm³ |
| Power | 10.9 kw |
| Max RPM | Add |
| Fuel consumption | 0.52 l/100km |
| Cooling system | Liquid |
| Transmission type,final drive | Chain |
| Torque | 15 Nm |
| Bore | 54 mm |
| Stroke | 54.4 mm |
| Gearbox | 6-speed |
| Greenhouse gases | 12.1 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel control | Add |
| Emission details | Add |
| Driveline | Add |
| Ignition | Add |
| Clutch | Add |
| Lubrication system | Add |
| Compression | 12.5:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | Add |
| Rear suspension | Add |
| Front brakes | Single disc |
| Rear brakes | Single disc |
| Diameter | 220 mm |
| Frame type | Add |
| Front tyre | 110/70-ZR17 |
| Rear tyre | 150/60-ZR17 |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | 120 mm |
| Rear wheel travel | Add |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Electric |
| Color options | Add |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,345 mm |
| Kerb weight | 143 kg |
| Dry weight | Add |
| Power/weight ratio | Add |
| Overall height | Add |
| Overall length | Add |
| Overall width | Add |
| Seat height | 780 mm |
| Alternate seat height | Add |
| Ground clearance | Add |
| Front percentage of weight | 49.3 |
| Rear percentage of weight | Add |
| Performance |
| Top speed | 124 km/h |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 13 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |