| Attribute | DKW RT 175 S 1956 × | Aermacchi HD 150 Zeffiro 1958 × |
|---|---|---|
| General | ||
| Production from (year) | 1956 | 1958 |
| Make | DKW | Aermacchi |
| Model | DKW RT 175 S | Aermacchi HD 150 Zeffiro |
| Category | Sport | Scooter |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor | Carburettor. DellÓrto |
| Displacement (cm³) | 174 | 148 |
| Cooling system | Air | Air |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 62 | 57 |
| Stroke (mm) | 58 | 58 |
| Gearbox | 4-speed | 3-speed |
| Clutch | - | Wet multiplate |
| Compression | - | 6.5:1 |
| Chassis | ||
| Front suspension | Telescopic | Telescopic |
| Rear suspension | Swingarm | - |
| Front brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Front tyre | 3-18 | 3-17 |
| Rear tyre | 3-18 | 3-17 |
| Seat | - | Two single seats |
| Wheels | Spoked | - |
| Other | ||
| Starter | - | Kick |
| Performance | ||
| Top speed (km/h) | 94 | 90 |