| Attribute | Aprilia SR 50 R Factory 2012 × | Derbi Atlantis Bullet 2004 × |
|---|---|---|
| General | ||
| Production from (year) | 2012 | 2004 |
| Make | Aprilia | Derbi |
| Model | Aprilia SR 50 R Factory | Derbi Atlantis Bullet |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Injection. EFI low flow injector. Direct injection system External opening, SMD 8 micron medium spray. | Carburettor |
| Displacement (cm³) | 49 | 49.9 |
| Cooling system | Liquid | Air |
| Transmission type,final drive | Belt | - |
| Bore (mm) | 40 | 40 |
| Stroke (mm) | 39.3 | 39.3 |
| Gearbox | Automatic | - |
| Driveline | V belt. Continuous automatic variator . | - |
| Ignition | CDI | - |
| Clutch | Automatic centrifugal dry clutch | - |
| Lubrication system | Oil injection with oil pump | - |
| Compression | 11.5:1 | 10.5:1 |
| Chassis | ||
| Front suspension | Hydraulic fork, | Hydraulic fork, 25 mm |
| Rear suspension | Engine unit acting as swingarm | Mono shock |
| 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 | 120/70-12 |
| Wheels | Five spoke, light alloy wheels | - |
| Front wheel travel (mm) | 90 | 65 |
| Rear wheel travel (mm) | 70 | 60 |
| Other | ||
| Starter | Electric | - |
| Color options |
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| Dimensions | ||
| Wheelbase (mm) | 1,290 | 1,265 |
| Overall height (mm) | 1,120 | 1,115 |
| Overall length (mm) | 1,860 | 1,810 |
| Overall width (mm) | 705 | 675 |
| Seat height (mm) | 820 | 795 |
| Performance | ||
| Reserve fuel capacity (l) | 1.2 | - |
| Fuel capacity (l) | 7 | 7 |