| Attribute | Aprilia SX 50 2009 × | Derbi GPR Racing 50 × |
|---|---|---|
| General | ||
| Production from (year) | 2009 | 2007 |
| Make | Aprilia | Derbi |
| Model | Aprilia SX 50 | Derbi GPR Racing 50 |
| Category | Super motard | Sport |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor. DELL’ORTO PVHA 17.5 | Carburettor. Dell´Orto PHVA-14 |
| Displacement (cm³) | 49.9 | 49.9 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | - |
| Bore (mm) | 39.9 | - |
| Stroke (mm) | 40 | - |
| Gearbox | 6-speed | 6-speed |
| Ignition | Electronic C.D.I | Electronic C.D.I. |
| Clutch | Multi-plate | Multidisc |
| Lubrication system | Automatic mixer | - |
| Compression | 11.5:1 | 12.5:1 |
| Exhaust system | Catalytic converter | - |
| Chassis | ||
| Front suspension | 40 mm hydraulic fork with leading axle, wheel travel 195 mm. | Inverted fork. |
| Rear suspension | High strength steel swingarm | Monoshock |
| Front brakes | Single disc | Single disc |
| Rear brakes | Single disc | Single disc |
| Diameter (mm) | 180 | 180 |
| Front tyre | 110/80-17 | 110/80-17 |
| Rear tyre | 130/70-17 | 130/70-17 |
| Front wheel travel (mm) | 120 | 120 |
| Rear wheel travel (mm) | 180 | 110 |
| Other | ||
| Starter | Kick | Electric |
| Color options |
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| Dimensions | ||
| Wheelbase (mm) | 1,406 | 1,355 |
| Overall length (mm) | 2,045 | 1,961 |
| Overall width (mm) | 825 | 788 |
| Seat height (mm) | 830 | 800 |
| Performance | ||
| Fuel capacity (l) | 7 | 13 |