| MODEL | AERMACCHI H-D 250 ALA AZZURRA 1964 |
| Year | 1964 |
| Engine Type | Single cylinder, four-stroke |
| Displacement / Capacity | 246 cc / 15.01 cu in |
| Bore X Stroke | — |
| Compression Ratio | 7.0:1 |
| Cooling System | Air |
| Max Power | 10 kW / 13.7 hp @ 6500 rpm |
| Max Torque | — |
| Ignition | — |
| Induction | Carburettor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | — |
| Clutch | Wet multiplate |
| Final Drive | — |
| CHASSIS SPECS | |
| Frame | Single cradle |
| Front Suspension | Telescopic |
| Rear Suspension | Swingarm with two shocks |
| Front Brakes | Drum, simplex, 160 mm / 6.3 in |
| Rear Brakes | Drum, simplex, 160 mm / 6.3 in |
| DIMENSION SPECS | |
| Overall Length | 1920 mm / 75.6 in |
| Overall Width | 700 mm / 27.6 in |
| Overall Height | 950 mm / 37.4 in |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 114 kg / 251.3 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 2.50-17 |
| Rear Tyre | 3-17 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | 125 km/h / 77.7 mph |
The Ala Azzurra (Blue Wing) was the mild touring 250 of the Aermacchi single family, sold in the USA under Harley-Davidson badging as a lightweight roadster. A 250 cc horizontal single with a wet clutch and swingarm frame, it favoured easy road use over the racing tune of the Ala d'Oro.
