Comparison of AJS Firefox 50 2020 and Kawasaki KX 100 Monster Energy [S]ave
| Attribute |  AJS Firefox 50 2020 × |  Kawasaki KX 100 Monster Energy × |
|---|---|---|
| General | ||
| Production from (year) | 2020 | 2010 |
| Make | AJS | Kawasaki |
| Model | AJS Firefox 50 | Kawasaki KX 100 Monster Energy |
| Category | Scooter | Cross / motocross |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor | Carburettor. Keihin PWK28 |
| Displacement (cm³) | 49 | 99 |
| Power (kw) | 2.2 | - |
| Cooling system | Air | Liquid |
| Transmission type,final drive | Belt | Chain |
| Bore (mm) | 39 | 52.5 |
| Stroke (mm) | 41.5 | 45.8 |
| Gearbox | Automatic | 6-speed |
| Driveline | CVT Automatic | - |
| Ignition | - | Digital CDI |
| Chassis | ||
| Front suspension | Telescopic fork | 36mm inverted telescopic cartridge fork with 18-way compression damping / 10.8 in. |
| Rear suspension | Single shock | UNI-TRAK single shock system with 4-way compression and 18-way rebound damping plus adjustable spring preload / 10.8 in. |
| Front brakes | Single disc | Single disc |
| Rear brakes | Expanding brake (drum brake) | Single disc |
| Frame type | Steel | High-tensile steel perimeter design with subframe member |
| Front tyre | 120/70-12 | 70/100-19 |
| Rear tyre | 120/70-12 | 90/90-16 |
| Rake (fork angle) (degree) | - | 27 |
| Other | ||
| Starter | Electric & kick | - |
| Color options |
|
|
| Electrical Voltage (V) | 12 | - |
| Dimensions | ||
| Wheelbase (mm) | 1,285 | 1,290 |
| Kerb weight (kg) | 91 | 71 |
| Overall height (mm) | 1,160 | 1,105 |
| Overall length (mm) | 1,850 | 1,910 |
| Overall width (mm) | 640 | 734 |
| Seat height (mm) | 825 | 871 |
| Performance | ||
| Top speed (km/h) | 48 | - |
| Fuel capacity (l) | 6.3 | 5.67 |
| Battery capacity (Ah) | 6 | - |
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