| Attribute | Derbi Atlantis 50 2T Bullet × | Piaggio Liberty 50 2008 × |
|---|---|---|
| General | ||
| Production from (year) | 2009 | 2008 |
| Make | Derbi | Piaggio |
| Model | Derbi Atlantis 50 2T Bullet | Piaggio Liberty 50 |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor. 17.5 mm | - |
| Displacement (cm³) | 49.4 | 49.4 |
| Cooling system | Air | Air |
| Transmission type,final drive | Belt | - |
| Bore (mm) | 40 | 40 |
| Stroke (mm) | 39.3 | 39.3 |
| Gearbox | Automatic | Automatic |
| Ignition | C.D.I. | - |
| Clutch | Centrifugal | Dry automatic centrifugal type |
| Lubrication system | Mechanical oil pump | Wet sump |
| Compression | 10.5:1 | 10.3:1 |
| Chassis | ||
| Front suspension | Hydraulic fork. | Telescopic fork, 76 mm travel |
| Rear suspension | Monoshock. | Hydraulic monoshock, 83 mm travel |
| Front brakes | Single disc | Single disc. calliper with opposed pistons |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Diameter (mm) | 110 | 140 |
| Frame type | - | Steel tubes |
| Front tyre | 120/70-12 | 90/80-16 |
| Rear tyre | 120/70-12 | 110/80-14 |
| Front wheel travel (mm) | 25 | 76 |
| Rear wheel travel (mm) | 65 | 83 |
| Other | ||
| Starter | Electric & kick | Electric & kick |
| Dimensions | ||
| Wheelbase (mm) | 1,265 | 1,330 |
| Dry weight (kg) | 86 | 87 |
| Overall length (mm) | 1,810 | 1,900 |
| Overall width (mm) | 675 | 670 |
| Seat height (mm) | 790 | 775 |
| Performance | ||
| Reserve fuel capacity (l) | 1.5 | - |
| Fuel capacity (l) | 7.1 | 6 |
| Oil capacity (l) | 1.5 | - |