THE SEI WAS AN ATTEMPT by Benelli’s new owner, Alessandro De Tomaso, to better high Japanese standards. Ironically, the engine was an almost-perfect copy of a fourcylinder, 500 cc Honda power unit, but with two extra cylinders grafted on. The alternator was mounted behind the cylinders in a rather futile attempt to reduce the engine’s width. Although prototypes appeared as early as 1972, production models did not reach the market until 1974. This is a 1976 model.
| Model: | Benelli 750 Sei |
| Capacity: | 748 cc |
| Power output: | 71 bhp (8900 rpm) |
| Weight: | 485 lb (220 kg) |
| Top speed: | 118 mph (190 km/h) |
| Country of origin: | Italy |