| Attribute | MBK Nitro 2006 × | Beta Ark 50 X × |
|---|---|---|
| General | ||
| Production from (year) | 2006 | 2007 |
| Make | MBK | Beta |
| Model | MBK Nitro | Beta Ark 50 X |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | - | Carburettor. Dell´Orto PHVA 12 HS |
| Displacement (cm³) | 49 | 49 |
| Power (kw) | 2 | - |
| Cooling system | Liquid | Air |
| Transmission type,final drive | - | Belt |
| Torque (Nm) | 3.7 | - |
| Bore (mm) | 40 | 40 |
| Stroke (mm) | 39.2 | 39.2 |
| Gearbox | - | Automatic |
| Ignition | Electronic (C.D.I.) | Electronic Ducati 12V - 60W |
| Clutch | - | Dry automatic centrifugal type |
| Lubrication system | Separate lubrication | With mechanical pump - gasoline-oil 1,5% (with synthetic oil) |
| Compression | 7.4:1 | 12.0:1 |
| Chassis | ||
| Front suspension | Hydraulic and telescopic fork | Hydraulic fork with ø32 mm shaft |
| Rear suspension | Hydraulic unit swing | Monoshock with adjustable spring preload |
| Front brakes | Single disc | Single disc |
| Rear brakes | Single disc | Single disc |
| Diameter (mm) | 190 | 190 |
| Frame type | - | tubular steel |
| Front tyre | 130/60-13 | 130/60-13 |
| Rear tyre | 140/60-13 | 130/60-13 |
| Front wheel travel (mm) | - | 32 |
| Other | ||
| Starter | Electric & kick | - |
| Color options | - |
|
| Dimensions | ||
| Wheelbase (mm) | 1,256 | 1,240 |
| Dry weight (kg) | 92 | 88 |
| Power/weight ratio | 0.0217 | - |
| Overall height (mm) | 1,170 | 1,150 |
| Overall length (mm) | 1,743 | 1,740 |
| Overall width (mm) | 690 | 750 |
| Seat height (mm) | 828 | 830 |
| Ground clearance (mm) | 185 | 215 |
| Performance | ||
| Reserve fuel capacity (l) | - | 1.3 |
| Fuel capacity (l) | 26.49 | 7.5 |