Comparison of Derbi Dirt Boy 50 2009 and Rieju MX 50 Disk 2006 [S]ave
| Attribute |  Derbi Dirt Boy 50 2009 × |  Rieju MX 50 Disk 2006 × |
|---|---|---|
| General | ||
| Production from (year) | 2009 | 2006 |
| Make | Derbi | Rieju |
| Model | Derbi Dirt Boy 50 | Rieju MX 50 Disk |
| Category | Minibike, cross | Minibike, cross |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor. 14 mm | Carburettor. Dell´Orto SHA 14/12 |
| Displacement (cm³) | 49.9 | 49 |
| Cooling system | Air | Air |
| Transmission type,final drive | - | Chain |
| Bore (mm) | 39 | 39 |
| Stroke (mm) | 41.8 | 41.8 |
| Gearbox | 1-speed | Automatic |
| Ignition | CDI | - |
| Lubrication system | Oil pump | - |
| Compression | 12.0:1 | - |
| Chassis | ||
| Front suspension | Hydraulic fork. | Telescopic fork |
| Rear suspension | Monoshock. | Hydraulic monoshoch |
| Front brakes | Single disc | Single disc |
| Rear brakes | Expanding brake (drum brake) | Single disc |
| Diameter (mm) | 90 | 145 |
| Frame type | - | In steel tube with automatic welding |
| Front tyre | 2.50-12 | - |
| Rear tyre | 2.75-10 | - |
| Front wheel travel (mm) | 120 | - |
| Rear wheel travel (mm) | 140 | - |
| Other | ||
| Starter | Kick | Kick |
| Color options |
| - |
| Dimensions | ||
| Wheelbase (mm) | 905 | 1,100 |
| Dry weight (kg) | 47 | 46 |
| Overall length (mm) | 1,290 | 1,596 |
| Overall width (mm) | 519 | 685 |
| Seat height (mm) | 610 | 740 |
| Performance | ||
| Fuel capacity (l) | 2.3 | - |
| Oil capacity (l) | 0.6 | - |
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