Aermacchi four-stroke · c. 1959–1966
Aermacchi Ala Azzurra: buying advice
The quiet touring version of the Aermacchi 250: the same horizontal four-stroke as the sporty Ala Verde, but tuned more mildly and meant for everyday use.

History
After the futuristic Chimera, Aermacchi decided to put the horizontal four-stroke engine in an ordinary motorcycle: without big panels and with two rear shocks. So the Ala range was born (‘ala’ means wing, a nod to Aermacchi’s aircraft building). The 175s were called Ala Bianca and Ala Rossa, the 250s Ala Azzurra (touring) and Ala Verde (sport).
Sources differ on the first year. Cycle World (1971) gives 1957 for a 250 cc ‘Turismo’; AM Klassiek gives 1959 for the introduction of the Ala Azzurra and Ala Verde. Motorrad & Reisen has datasheets from 1961 to 1965 and gives production until 1966.
The Ala Azzurra was the quietest version of the 250: lower compression and less power than the Ala Verde. According to Cybermotorcycle it also served as the basis for the Wisconsin, the first Aermacchi-Harley-Davidson. Later the Ala Blu 250 used the Ala Azzurra engine.
Cycle World described the touring pair Ala Bianca (175) and Ala Azzurra (250) as bikes with an ordinary swingarm and a simple tubular frame, good for about 100 and 120 km/h. The Classic MotorCycle calls the Ala Azzurra the most mildly tuned of the road models, after the Ala Verde and Ala Rossa.
What does that mean for you as a buyer? The Ala Azzurra is not a racer, but a light, economical tourer with a low centre of gravity. The low compression makes the engine less highly stressed than those of its sporty brothers. If you are looking for an affordable way into the world of the horizontal Aermacchi single for relaxed touring, this is a good choice, provided the bike is complete and healthy.
Versions
The Ala Azzurra was changed slightly over the years. Motorrad & Reisen, for example, gives a different rear tyre for 1965 (2.50-17 instead of 3.00-17). We did not find extensive factory lists of changes per year.
Related models: the sportier Ala Verde, the Wisconsin (export version) and the later Ala Blu.
Key data
| Engine | Single cylinder, four-stroke, horizontal, pushrod OHV, air-cooled |
|---|---|
| Bore × stroke | 66 × 72 mm, 246 cc |
| Compression | 7,0 : 1 |
| Power | 13.7 hp at 6,500 rpm (claimed) |
| Gears | 4 |
| Brakes | drums front and rear, 160 mm |
| Tyres | 17 inch (datasheet); the Motorrad & Reisen text says 18 inch |
| Tank | 18 litres (datasheet); the text says 14 litres |
| Weight | c. 114 kg dry |
| Top speed | c. 120–125 km/h |
For tank capacity and wheel size Motorrad & Reisen contradicts itself; both values are given above.
Known weak points
Because the Ala Azzurra, Ala Verde and Wisconsin share the same basis, many bikes have had parts swapped or have been ‘upgraded’ to Ala Verde or even Ala d’Oro replicas. A real, original Ala Azzurra is therefore rarer than you might think.
The kick-starter is on the left, which takes some getting used to. Starting works best with a fixed routine.
The 6-volt lighting is weak by today’s standards.
Work on the crankshaft and the centre of the crankcase needs special tools.
With hard use some oil may leak at the clutch mechanism.
What to check when buying
- Check the frame and engine numbers and whether the engine really is an Ala Azzurra engine (low compression).
- Start the engine cold and listen to the bottom end, the timing gear and the gearbox.
- Look for oil leaks around the clutch, valve cover and crankcase joint.
- Check that tank, mudguards, side panels and badges belong to an Ala Azzurra.
- Do the electrics work, including the charging?
Parts and prices
The engine shares a lot with the Ala Verde, Wisconsin and Sprint. So mechanical parts can reasonably be found through Aermacchi specialists, clubs and autojumbles. Typical Ala Azzurra parts, such as paint, badges and some panels, are harder.
We found no reliable price data for the Ala Azzurra itself. In 2018 AM Klassiek gave about €5,000 to €10,000 for the related Ala Verde; a touring model will not automatically be above that. Treat this as a rough indication.
SourcesMotorrad & Reisen: Aermacchi H-D 250 Ala AzzurraCycle World (1971): History of AermacchiAM Klassiek (2018): Aermacchi Ala Verde 250Cybermotorcycle: Aermacchi Wisconsin (1961)Cybermotorcycle: Aermacchi modelsThe Classic MotorCycle / Classic Bike Hub (2013): Road test Ala VerdeRider Magazine (2018): Harley-Davidson 250 Sprint 1961–1968