Aermacchi's 250 Ala d'Oro DS was introduced in the '60s, starting at 22 hp and eventually reaching 42 hp in 350 form by ...

It's a long-stroke mill with a 49 mm ... little reserve for passing. The 249 cc air-cooled V-twin engine on the V-Star 250 produces 21 horsepower and 15.2 pound-feet of torque.