Comparison of AJS Firefox 50 2020 and Sachs SpeedJet 2013 [S]ave
| Attribute |  AJS Firefox 50 2020 × |  Sachs SpeedJet 2013 × |
|---|---|---|
| General | ||
| Production from (year) | 2020 | 2013 |
| Make | AJS | Sachs |
| Model | AJS Firefox 50 | Sachs SpeedJet |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor | Carburettor |
| Displacement (cm³) | 49 | 49 |
| Power (kw) | 2.2 | 2.8 |
| Cooling system | Air | - |
| Transmission type,final drive | Belt | Belt |
| Bore (mm) | 39 | - |
| Stroke (mm) | 41.5 | - |
| Gearbox | Automatic | Automatic |
| Fuel control | - | Single Overhead Cams (SOHC) |
| Driveline | CVT Automatic | CVT variomatic |
| Chassis | ||
| Front suspension | Telescopic fork | Telescopic |
| Rear suspension | Single shock | Dual shocks |
| Front brakes | Single disc | Single disc. Wave disk |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Frame type | Steel | Steel |
| Front tyre | 120/70-12 | 120/70-12 |
| Rear tyre | 120/70-12 | 120/70-12 |
| Seat | - | 2-person seat |
| Other | ||
| Starter | Electric & kick | Electric & kick |
| Color options |
|
|
| Light | - | Dual headlights |
| Electrical Voltage (V) | 12 | - |
| Dimensions | ||
| Wheelbase (mm) | 1,285 | 1,290 |
| Kerb weight (kg) | 91 | 92 |
| Dry weight (kg) | - | 87 |
| Power/weight ratio | - | 0.0322 |
| Overall height (mm) | 1,160 | 1,165 |
| Overall length (mm) | 1,850 | 1,870 |
| Overall width (mm) | 640 | 700 |
| Seat height (mm) | 825 | 800 |
| Performance | ||
| Top speed (km/h) | 48 | 45 |
| Fuel capacity (l) | 6.3 | 4.7 |
| Battery capacity (Ah) | 6 | - |
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