The 750 Sei is a model of motor bike produces by the Italian firm Benelli.

It appears with the public with the living room of Milan of 1972. Floret of the mark of Pesaro, it is intended to compete with multicylinder Japanese, Honda and its 750 Furnace at the head.

It is besides an engine of 500 Furnace which is used as model with the realization of the six cylinders of the 750 Sei, and which will be studied to conceive the four cylinders Quattro.
models This engine is given for more than 70 horses, although actually it makes only 60 of them.

Esthetics is also a realization “house”, since the study comes from the Italian carriage-builder Ghia, of which the company forms part, like Benelli, of the group De Tomaso.

The telescopic fork was created especially by Marzocchi. Brembo, of which it is the first incursion into industry motorcylcist, provides the two discs before 280  Misters Although accelerations are not phenomenal, Pirelli with the responsibility of studied a back tire able to support almost 250 kg in functioning order of the machine.

The 750 Sei recovers the integral braking already seen on the Moto Guzzi (also property of Tomaso). The handbrake lever before order a clamp of front brake, while the brake pedals actuate the second clamp before and the back clamp.

But reliability misses cruelly to the 750 Sei. The manufacture of the engine is initially delocalized of Pesaro with Mandello del Lario, in the factory Moto Guzzi. Steels which are employed there are of less good quality and the too fast wear of certain parts, in particular the pinions and forks of the Gear box or the rocking-levers of distribution, involve breakages moteur.
The 750 Sei is also prone to a pronounced oil consumption, associated with escapes with the cylinders. The electrical circuit is far from being perfect and involves troubles of lighting and a great number of dysfunctions (headlights or Flickering S which break down).
In addition, the quality of manufacture is in lower part of the Japanese standards, and the performances cannot support the comparison.

For all these reasons, the 750 Sei disappears in 1977, after being left only with a little more than 3.000 specimens. The 750 Sei is replaced by the 900 Sei .

The cubic capacity of the engine passes to 906 cm ³ (60 X 53,4 mm) and develops 80 horses with 8.300 tr/min. The weight is also in rise to 220 kg.

Esthetics is also altered. The rims with rays are abandoned with the profit of models to six sticks in Alliage and it receives a preparing monoshell and a careenage of headlight. The Réservoir is tiny room of 5 liters.

Braking is improved. The diameter of the front discs passes to 320 mm and that of the back disc to 260 Misters.

Primarily sold in red, there exist some machines sold with a white and black dress. Between 1985 and 1987, Benelli will produce a 900 Sei Sport , with in particular a careenage Tête of fork surrounding a new square headlight.

The 900 will not know a better career than the 750. It is withdrawn from the catalog in 1990.