Among all the 4-cilinder 750S produced in Casina Costa, the 750 4C75 had the lowest production volume at 33 units but was also the best one suited to the shaft drive configuration due to its touring layout. It was a spectacular motorcycle and was the successor of the 600 of 1967, altough faren more elegant. Fitted with four single silencers, it gave off a glorious sound, but with drum brakes front and rear, it was heavy on touring and light on sport. Rated at 66 HP at 8,000 rpm, and equipped with a five speed gearbox in a tubular frame with a double cradle for the engine, the 750 4C75 was not an inexpensive machine, it would set back 1,960,000 Lire.
Engine: Technical Specification (1972)
Cylinders / Cycle: 4/4 stroke
Displacement: 742,9 cc
Bore x stroke: 65 x 56 mm x 4
Compression ratio: 9.5:1
Power / rpm: 69 HP / 7,900
Torque / rpm: 5,8 kgm / 7,500
Cooling: air
Distribution: double overhead cam
Carburettor: 27 mm carburettor x 4
Ignition: disstributor
Lubrication: wet sump
Starting: electric
Primary drive: gear
Clutch: wet multiple plate clutch
Gearbox: 5 speeds
Final drive: shaft
Chassis:
Frame: double cradle tubular steel frame
Front suspension: telescopic hydraulic fork
Rear suspension: swingarm with mechanical shocks
Front brake: double 280 mm drums
Rear brake: 200 mm drum
Front tire: 3.50 x18”
Rear tire: 3.50 x18”
Wheels: spokes
Tank: 24 litres
Length: 2210 mm
Width: 720 mm
Wheelbase: 1390 mm
Weight: 224 Kg
Performance: 200 kph