Comparison of Aprilia SR 50 R Street 2009 and Yamaha Neos 4S [S]ave
| Attribute |  Aprilia SR 50 R Street 2009 × |  Yamaha Neos 4S × |
|---|---|---|
| General | ||
| Production from (year) | 2009 | 2009 |
| Make | Aprilia | Yamaha |
| Model | Aprilia SR 50 R Street | Yamaha Neos 4S |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor. 17.5 mm throttle body | Injection |
| Displacement (cm³) | 49 | 49.4 |
| Power (kw) | - | 2.2 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Belt | Belt |
| Torque (Nm) | - | 3.2 |
| Bore (mm) | 40 | 38 |
| Stroke (mm) | 39.3 | 43.6 |
| Gearbox | Automatic | Automatic |
| Ignition | CDI - capacitor discharge ignition | TCI |
| Lubrication system | Separate mixing with mechanical oil pump | Wet sump |
| Compression | 12.1:1 | 12.0:1 |
| Chassis | ||
| Front suspension | Hydraulic fork | Telescopic fork |
| Rear suspension | Engine unit acting as swingarm | Unit swing |
| Front brakes | Single disc | Single disc |
| Rear brakes | Single disc | Expanding brake (drum brake) |
| Diameter (mm) | 190 | 110 |
| Frame type | Split single cradle frame in high tensile strength steel tube | - |
| Front tyre | 130/60-13 | 120/70-12 |
| Rear tyre | 130/60-13 | 130/70-12 |
| Other | ||
| Starter | Electric | Electric & kick |
| Color options |
| - |
| Dimensions | ||
| Wheelbase (mm) | 1,290 | 1,275 |
| Kerb weight (kg) | - | 95 |
| Overall length (mm) | 1,860 | 1,840 |
| Seat height (mm) | 820 | 790 |
| Performance | ||
| Reserve fuel capacity (l) | 1.2 | - |
| Fuel capacity (l) | 7 | 5.4 |
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