The Benelli 750 Sei is a masterpiece of Italian engineering, boasting six gleaming chrome-plated exhaust mufflers and an unmistakable style that turns heads on the road.
Its 748cc SOHC engine may not have been revolutionary in terms of innovation, but it delivered remarkable smoothness and effortless acceleration, making it a fine all-round performer. Despite its claimed peak output of 71 bhp at 8500rpm, some critics argue that the Sei’s engine was little more than two Honda CB500 motors merged together.
However, this criticism belies the unique characteristics of Benelli’s six-cylinder motor, including its distinctive alternator placement and narrow crankcases. The result is a bike that exudes sophistication and refinement, making it an eye-catching package on the road.
The Benelli 750 Sei’s impressive pedigree as a world-class motorcycle manufacturer – having won the 250cc championship just five years prior to its launch in 1974 – adds to its allure.
Key Specifications
Engine Type
Transverse six cylinders, four stroke, SOHC, 2 valve per cylinder
Engine Capacity
748 cc / 46.6 cu in
Max Power
52.9 kw / 71 hp
Fuel Tank Capacity
6.1 US gallons / 23.0 L
Seat Height
29 inches / 737 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
Benelli 750 Sei
Year
1976 – 78
Engine
Engine Type
Transverse six cylinders, four stroke, SOHC, 2 valve per cylinder
Displacement
748 cc / 46.6 cu in
Bore x Stroke
56 x 50.6 mm
Compression Ratio
9.8:1
Max Horsepower
52.9 kw / 71 hp
Engine Management System
3 x 24 mm Dell’Orto VHB29 carburetors
Lubrication System
Wet sump with cartridge filter
Cooling System
Air cooled
Exhaust
2 x 3-into-1-into-3
Performance
Top Speed
190 km/h / 118 mph
*n/a – information not provided by manufacturer
Transmission
Clutch
Wet multi-plate
Gearbox
5 Speed
Final Drive
Chain
Electrical & Electronics System
Starter
Electric & kick start
Chassis & Suspension
Front Suspension
Marzocchi telescopic cartridge-type suspension forks (Some models used Paoli!)
Rear Suspension
Dual Sebac shocks, preload adjustable
Wheels & Brakes
Front Tire Size
3.25-18
Rear Tire Size
4.10-18
Front Brakes
2 x 300 mm discs, 2 piston calipers
Rear Brakes
210 mm drum
Dimension & Weights
Overall Length
2197 mm / 86.5 in
Overall Width
762 mm / 30.0 in
Seat Height
29 inches / 737 mm
Wheelbase
55 inches / 1397 mm
Fuel Tank Capacity
6.1 US gallons / 23.0 L
Dry Weight
220 kg / 485 lbs
Features
Transverse six cylinders engine
Four stroke, SOHC engine
2 valve per cylinder design
Battery ignition (later model electronic ignition)
*We strive to provide the most comprehensive and accurate specifications possible. However, certain details may not be available if the manufacturer did not disclose them or if the information is no longer publicly accessible. If you find any discrepancy with any data on this site, please feel free to let us know at contact@throttlecraze.com
