| Attribute | Derbi Sonar 125 4T 2011 × | Derbi Boulevard 125 4T 2009 × |
|---|---|---|
| General | ||
| Production from (year) | 2011 | 2009 |
| Make | Derbi | Derbi |
| Model | Derbi Sonar 125 4T | Derbi Boulevard 125 4T |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 124 | 124 |
| Power (kw) | 7.7 | - |
| Cooling system | Air | Air |
| Transmission type,final drive | Belt | Belt |
| Torque (Nm) | 9.6 | - |
| Bore (mm) | 57 | 57 |
| Stroke (mm) | 48.6 | 48.6 |
| Gearbox | Automatic | Automatic |
| Emission details | Compartment underthe seat to hold a jet helmet. | - |
| Clutch | Automatic centrifugal | Centrifugal |
| Lubrication system | Mechanical oil pump | Mechanical oil pump |
| Compression | 10.6:1 | 11.2:1 |
| Chassis | ||
| Front suspension | 32 mm fork. | 32 mm fork. |
| Rear suspension | Monoshock | Single shock absorber |
| Front brakes | Single disc | Single disc |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Diameter (mm) | 140 | 140 |
| Frame type | - | Tube type in steel |
| Front tyre | 90/80-16 | 120/70-12 |
| Rear tyre | 110/80-14 | 120/70-12 |
| Front wheel travel (mm) | 76 | 76 |
| Rear wheel travel (mm) | 64 | 64 |
| Other | ||
| Starter | Electric | Electric |
| Color options |
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| Dimensions | ||
| Wheelbase (mm) | 1,325 | 1,340 |
| Dry weight (kg) | 99 | 115 |
| Power/weight ratio | 0.0778 | - |
| Overall length (mm) | 1,930 | 1,880 |
| Overall width (mm) | 740 | 735 |
| Seat height (mm) | 805 | 780 |
| Performance | ||
| Fuel capacity (l) | 6 | 8 |