Comparison of Derbi Dirt Boy 50 2008 and Kawasaki KX 65 2005 [S]ave
| Attribute |  Kawasaki KX 65 2005 × |  Derbi Dirt Boy 50 2008 × |
|---|---|---|
| General | ||
| Production from (year) | 2005 | 2008 |
| Make | Kawasaki | Derbi |
| Model | Kawasaki KX 65 | Derbi Dirt Boy 50 |
| Category | Cross / motocross | Minibike, cross |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, four-stroke |
| Fuel system | Carburettor. Mikuni VM24SS | Carburettor |
| Displacement (cm³) | 64.7 | 49.9 |
| Cooling system | Liquid | Air |
| Transmission type,final drive | Chain | Belt |
| Bore (mm) | 44.5 | 39 |
| Stroke (mm) | 41.6 | 41.8 |
| Gearbox | 6-speed | 1-speed |
| Ignition | Electronic CDI | CDI |
| Lubrication system | - | Oil pump |
| Compression | 8.4:1 | 12.0:1 |
| Chassis | ||
| Front suspension | 33mm leading axle conventional fork | Hydraulic fork. 120 mm travel |
| Rear suspension | UNI-TRAK® single shock system | Monoshock. 140 mm travel |
| Front brakes | Single disc | Single disc |
| Rear brakes | Single disc | Expanding brake (drum brake) |
| Diameter (mm) | - | 90 |
| Frame type | Semi-double-cradle, high-tensile steel | - |
| Front tyre | 60/90-14 | 2.5-12 |
| Rear tyre | 80/90-12 | 2.75-10 |
| Rake (fork angle) (degree) | 27 | - |
| Other | ||
| Starter | - | Kick |
| Color options |
|
|
| Dimensions | ||
| Wheelbase (mm) | 1,120 | 905 |
| Dry weight (kg) | 57 | 47 |
| Overall height (mm) | 955 | 1,260 |
| Overall width (mm) | 759 | 815 |
| Seat height (mm) | 759 | 610 |
| Ground clearance (mm) | 12 | - |
| Performance | ||
| Fuel capacity (l) | 3.78 | 2.3 |
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