| Attribute | Value |
| General |
| Production from | 2013 year |
| Make | Aprilia |
| Model | Aprilia RS 125 |
| Category | Sport |
| Engine and transmission |
| Engine type | Single cylinder, two-stroke |
| Valves per cylinder | Add |
| Fuel system | Carburettor. Dell’Orto VHST 28 |
| Engine details | Read valve intake. |
| Displacement | 124.8 cm³ |
| Power | 20.6 kw |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Liquid |
| Transmission type,final drive | Chain |
| Torque | Add |
| Bore | 54 mm |
| Stroke | 54.7 mm |
| Gearbox | 6-speed |
| Greenhouse gases | Add |
| Fuel control | Add |
| Emission details | Euro 2 |
| Driveline | Primary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35). |
| Ignition | CDI |
| Clutch | Multi-plate in oil bath. |
| Lubrication system | Separate mixing with variable displacement, volumetric pump. |
| Compression | 12.5:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | Upside down hydraulic fork, 40 mm. |
| Rear suspension | Swingarm. Hydraulic monoshock with adjustable spring preload. |
| Front brakes | Single disc |
| Rear brakes | Single disc |
| Diameter | 220 mm |
| Frame type | Sloping twin-spar frame in thin wall box section cast aluminium, with reinforcement cross-ribbing. |
| Front tyre | 110/70-R17 |
| Rear tyre | 150/60-R17 |
| Seat | Add |
| Wheels | Aluminium alloy rims |
| Front wheel travel | 120 mm |
| Rear wheel travel | 120 mm |
| 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 | 1,345 mm |
| Kerb weight | 120 kg |
| Dry weight | Add |
| Power/weight ratio | Add |
| Overall height | 1,100 mm |
| Overall length | 1,955 mm |
| Overall width | 720 mm |
| Seat height | 805 mm |
| Alternate seat height | Add |
| Ground clearance | Add |
| 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 | 3.5 l |
| Fuel capacity | 14.5 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |