| Attribute | Aermacchi HD 150 Zeffiro 1957 × | Lambretta LI 125 Series 1 1959 × |
|---|---|---|
| General | ||
| Production from (year) | 1957 | 1959 |
| Make | Aermacchi | Lambretta |
| Model | Aermacchi HD 150 Zeffiro | Lambretta LI 125 Series 1 |
| Category | Scooter | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor. DellÓrto | Carburettor |
| Displacement (cm³) | 148 | 123 |
| Power (kw) | 4.4 | 3.8 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | - |
| Bore (mm) | 57 | 52 |
| Stroke (mm) | 58 | 58 |
| Gearbox | 3-speed | 4-speed |
| Clutch | Wet multiplate | Constant mesh |
| Compression | 6.5:1 | 7.0:1 |
| Chassis | ||
| Front suspension | Telescopic | - |
| Front brakes | Expanding brake (drum brake) | - |
| Rear brakes | Expanding brake (drum brake) | - |
| Front tyre | 3-17 | 3.50-10 |
| Rear tyre | 3-17 | 3.50-1+ |
| Seat | Two single seats | Dual seat |
| Other | ||
| Starter | Kick | Kick |
| Performance | ||
| Top speed (km/h) | 90 | 69 |