Benelli 750 Sei (1974-75)

The Benelli 750 Sei was a 6-cylinder motorcycle produced in 1974-75. Its engine was a transverse 4-stroke with 2 valves per cylinder and a capacity of 748cc. The bike had a compression ratio of 9.8:1 and was cooled by air, with an exhaust of 2×3-into-1-into-3. The Sei had a maximum power of 52.9 kW/71 hp at 8500 rpm and a 5-speed transmission with a chain final drive. It had a Marzocchi telescopic cartridge-type suspension with dual Sebac shocks in the rear. The front brakes used 2x300mm discs and 2-piston calipers while the rear brakes used a 200mm drum. The bike weighed 220 kg/485 lbs and had a fuel capacity of 23 litres/6.1 US gal. It consumed an average of 5.9 L/100 km and had a standing quarter-mile time of 14.0 sec/148 km/h/92 mph with a top speed of 190 km/h/118 mph. The bike has been reviewed on benellimotoclub and compared to the CBX and Z1300.

---

Technical specifications:

Make Model: Benelli 750 Sei

Year: 1974-75

Engine: Transverse six cylinders, four stroke, SOHC, 2 valve per cylinder

Capacity: 748 cc / 46.6 cu in

Bore x Stroke: 56 x 50.6 mm

Compression Ratio: 9.8:1

Cooling System: Air cooled

Exhaust: 2 x 3-into-1-into-3

Induction: 3 x 24mm Dell’Orto carburetors

Ignition: Battery ignition (later model electronic ignition)

Starting: Electric & kick start

Max Power: 52.9 kW / 71 hp @ 8500 rpm

Transmission: 5 Speed

Final Drive: Chain

Front Suspension: Marzocchi telescopic cartridge-type suspension forks (Some models used Paoli!)

Rear Suspension: Dual Sebac shocks, preload adjustable

Front Brakes: 2 x 300 mm discs, 2 piston calipers

Rear Brakes: 200 mm drum

Front Tyre: 3.25-18

Rear Tyre: 4.10-18

Dry Weight: 220 kg / 485 lbs

Fuel Capacity: 23 Litres / 6.1 US gal

Consumption Average: 5.9 L/100 km / 17 km/l / 40 mpg

Standing 1/4 Mile: 14.0 sec / 148 km/h / 92 mph

Top Speed: 190 km/h / 118 mph

Reviews: benellimotoclub – sei vs cbx vs z1300