Comparison of Derbi Dirt Boy 50 2008 and Yamaha BWs 12inch 2015 [S]ave
| Attribute |  Yamaha BWs 12inch 2015 × |  Derbi Dirt Boy 50 2008 × |
|---|---|---|
| General | ||
| Production from (year) | 2015 | 2008 |
| Make | Yamaha | Derbi |
| Model | Yamaha BWs 12inch | Derbi Dirt Boy 50 |
| Category | Scooter | Minibike, cross |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor. Gurtner | Carburettor |
| Displacement (cm³) | 49.2 | 49.9 |
| Power (kw) | 2.4 | - |
| Cooling system | Air | Air |
| Transmission type,final drive | Belt | Belt |
| Torque (Nm) | 3.6 | - |
| Bore (mm) | 40 | 39 |
| Stroke (mm) | 39.2 | 41.8 |
| Gearbox | Automatic | 1-speed |
| Ignition | CDI | CDI |
| Lubrication system | Separate lubrication | Oil pump |
| Compression | 7.2:1 | 12.0:1 |
| Chassis | ||
| Front suspension | Telescopic fork | Hydraulic fork. 120 mm travel |
| Rear suspension | Unit swing | Monoshock. 140 mm travel |
| Front brakes | Single disc | Single disc |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Diameter (mm) | 110 | 90 |
| Front tyre | 120/70-12 | 2.5-12 |
| Rear tyre | 130/70-12 | 2.75-10 |
| Seat | Dual seat with passenger grab handles | - |
| Wheels | Alloy wheels | - |
| Front wheel travel (mm) | 70 | - |
| Rear wheel travel (mm) | 70 | - |
| Other | ||
| Starter | Electric & kick | Kick |
| Color options |
|
|
| Light | Twin front lights | - |
| Dimensions | ||
| Wheelbase (mm) | 1,174 | 905 |
| Kerb weight (kg) | 82 | - |
| Dry weight (kg) | - | 47 |
| Overall height (mm) | 1,052 | 1,260 |
| Overall width (mm) | 690 | 815 |
| Seat height (mm) | 768 | 610 |
| Ground clearance (mm) | 124 | - |
| Performance | ||
| Fuel capacity (l) | 5.3 | 2.3 |
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