Comparison of Aprilia RS4 50 2018 and Aprilia RS4 50 2017 [S]ave
| Attribute |  Aprilia RS4 50 2018 × | Aprilia RS4 50 2017 × |
|---|---|---|
| General | ||
| Production from (year) | 2018 | 2017 |
| Make | Aprilia | Aprilia |
| Model | Aprilia RS4 50 | Aprilia RS4 50 |
| Category | Sport | Sport |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor | Carburettor |
| Engine details | Reed intake valve | - |
| Displacement (cm³) | 49.9 | 49.9 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 39.9 | 39.9 |
| Stroke (mm) | 39.9 | 39.9 |
| Gearbox | 6-speed | 6-speed |
| Emission details | Euro 2 | Euro 2 |
| Driveline | Chain, 11/53. Primary drive: Gears, 21/78. | Chain, 11/53. Primary drive: Gears, 21/78. |
| Ignition | Electronic with CDI capacity discharge | Electronic with CDI capacity discharge |
| Clutch | Multiplate wet clutch | Multiplate wet clutch |
| Lubrication system | Automatic mixer | Automatic mixer |
| Compression | 11.5:1 | 11.5:1 |
| Chassis | ||
| Front suspension | 41 mm upside down fork | 41 mm upside down fork |
| Rear suspension | Asymmetric swingarm with monoshock | Asymmetric swingarm with monoshock |
| Front brakes | Single disc. Radial 4 piston calliper | Single disc. Radial 4 piston calliper |
| Rear brakes | Single disc | Single disc |
| Diameter (mm) | 220 | 218 |
| Front tyre | 100/80-17 | 100/80-17 |
| Rear tyre | 130/70-17 | 130/70-17 |
| Front wheel travel (mm) | 110 | 110 |
| Rear wheel travel (mm) | 122 | 122 |
| Other | ||
| Starter | Electric | Electric |
| Color options |
|
|
| Instruments | LCD screen | LCD screen |
| Dimensions | ||
| Wheelbase (mm) | 1,350 | 1,350 |
| Overall length (mm) | 1,953 | 1,953 |
| Overall width (mm) | 740 | 740 |
| Seat height (mm) | 820 | 820 |
| Performance | ||
| Reserve fuel capacity (l) | 3.3 | 3.3 |
| Fuel capacity (l) | 14.5 | 14.5 |
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