Comparison of Aprilia SR 50 R 2011 and Derbi GPR 50 Nude 2009 [S]ave
| Attribute |  Derbi GPR 50 Nude 2009 × |  Aprilia SR 50 R 2011 × |
|---|---|---|
| General | ||
| Production from (year) | 2009 | 2011 |
| Make | Derbi | Aprilia |
| Model | Derbi GPR 50 Nude | Aprilia SR 50 R |
| Category | Naked bike | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor. 14 mm | Carburettor |
| Displacement (cm³) | 49 | 49 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Belt |
| Bore (mm) | 39.9 | 40 |
| Stroke (mm) | 40 | 39.3 |
| Gearbox | 6-speed | Automatic |
| Fuel control | Single Overhead Cams (SOHC) | - |
| Ignition | C.D.I. | Capacitor discharge ignition |
| Clutch | Multi-plate | Automatic centrifugal dry clutch |
| Lubrication system | Oil pump | Separate mixing with mechanical oil pump |
| Compression | 11.5:1 | 12.1:1 |
| Chassis | ||
| Front suspension | 40 mm. Upside-down fork. | Hydraulic fork |
| Rear suspension | Monoshock. | Engine unit acting as swingarm |
| Front brakes | Single disc | Single disc |
| Rear brakes | Single disc | Single disc |
| Diameter (mm) | 180 | 190 |
| Frame type | - | Split single cradle frame in high tensile strength steel tube |
| Front tyre | 100/80-17 | 130/60-13 |
| Rear tyre | 130/70-17 | 130/60-13 |
| Wheels | - | Five spoke, light alloy wheels |
| Front wheel travel (mm) | 110 | 90 |
| Rear wheel travel (mm) | 110 | 70 |
| Other | ||
| Starter | Electric | Electric |
| Color options |
|
|
| Electrical Voltage (V) | - | 12 |
| Dimensions | ||
| Wheelbase (mm) | 1,310 | 1,290 |
| Dry weight (kg) | 102 | 199 |
| Overall height (mm) | 1,116 | 1,120 |
| Overall length (mm) | 1,961 | 1,860 |
| Overall width (mm) | 720 | 705 |
| Seat height (mm) | 845 | 820 |
| Performance | ||
| Fuel capacity (l) | 13 | 7 |
| Oil capacity (l) | 1.5 | - |
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