| Attribute | Value |
| General |
| Production from | 2011 year |
| Make | Aprilia |
| Model | Aprilia RS4 50 |
| Category | Sport |
| Engine and transmission |
| Engine type | Single cylinder, two-stroke |
| Valves per cylinder | Add |
| Fuel system | Carburettor. Dell’Orto PHVA – 17.5 |
| Engine details | Add |
| Displacement | 49.9 cm³ |
| Power | Add |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Liquid |
| Transmission type,final drive | Chain |
| Torque | Add |
| Bore | 39.9 mm |
| Stroke | 40 mm |
| Gearbox | 6-speed |
| Greenhouse gases | Add |
| Fuel control | Add |
| Emission details | Euro 2 |
| Driveline | Primary drive: Gears. Ratio: 21/78. Final drive: Chain. Ratio: 14/53 |
| Ignition | Elettronica C.D.I. |
| Clutch | Multi-plate |
| Lubrication system | Automatic mixer |
| Compression | 11.5:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | 40 mm upside down fork |
| Rear suspension | Asymmetric swingarm with monoshock |
| Front brakes | Single disc |
| Rear brakes | Single disc |
| Diameter | 180 mm |
| Frame type | Twin spar aluminium frame |
| Front tyre | 110/80-17 |
| Rear tyre | 130/70-17 |
| Seat | Add |
| Wheels | light alloy with 6 split spokes, with sealing profile for tubeless tyres |
| Front wheel travel | 110 mm |
| Rear wheel travel | 130 mm |
| Trail | Add |
| Rake (fork angle) | Add |
| Performance |
| Top speed | Add |
| Other |
| Starter | Electric |
| Color options | |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | 12 V |
| Dimensions |
| Wheelbase | 1,350 mm |
| Kerb weight | Add |
| Dry weight | Add |
| Power/weight ratio | Add |
| Overall height | Add |
| Overall length | 1,953 mm |
| Overall width | 740 mm |
| Seat height | 820 mm |
| Alternate seat height | Add |
| Ground clearance | Add |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Width | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 14.5 l |
| Oil capacity | Add |
| Height | Add |
| Battery capacity | 6 Ah |