| MODEL | BENELLI 750SEI 1974 - 1975 |
| Year | 1974 - 1975 |
| Engine Type | Transverse six cylinder, four stroke, SOHC, 2 valves per cylinder |
| Displacement / Capacity | 748 cc / 46.6 cu in |
| Bore X Stroke | 56 x 50.6 mm |
| Compression Ratio | 9.8:1 |
| Cooling System | Air cooled |
| Max Power | 52.9 kW / 71 hp @ 8500 rpm |
| Max Torque | — |
| Ignition | Battery ignition (later models electronic) |
| Induction | 3 x 24 mm Dell'Orto carburettors |
| Start System | Electric and kick start |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 speed |
| Clutch | Wet |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel twin cradle |
| Front Suspension | Marzocchi telescopic cartridge-type forks |
| Rear Suspension | Dual Sebac shocks, preload adjustable |
| Front Brakes | 2 x 300 mm discs, 2-piston calipers |
| Rear Brakes | 200 mm drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 220 kg / 485 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.25-18 |
| Rear Tyre | 4.10-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 23 Litres / 6.1 US gal |
| Fuel Consumption | 5.9 L/100 km / 17 km/l / 40 mpg |
| Top Speed | 190 km/h / 118 mph |
The 750 Sei was the first production six-cylinder motorcycle when it launched in 1974, a stylish and smooth Italian superbike. Its engine owed a lot to Honda's CB500 layout, but with a gear-driven alternator behind the cylinders to keep it narrow. It handled and braked well but was not quick for its class, and its price and reliability worries limited sales.
