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Honda CB 750 Four K5

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Make Model

Honda CB 750 Four K5

Year

1975

Engine

Four stroke, transverse four cylinder, SOHC, 2 valve per cylinder.

Capacity

736 cc / 44.9 cub in.

Bore x Stroke

61 х 63 mm

Compression Ratio

9.0:1

Cooling System

Air cooled

Lubrication

Dry sump

Induction

4 x 28 mm Keihin carburetors

Ignition

Battery, ignition coil

Spark Plug

NGK D8ES-L, NDX 24 ES

Starting

Electric, kick

Max Power

50 kW / 67 hp @ 8000 rpm

Max Torque 44 lb-ft / 60 Nm @ 7000 rpm

Clutch

Multi-plate, wet

Transmission

5 Speed

Final Drive

Chain

Gear Ratios

1st 13.99 / 2nd  9.54 / 3rd 7.45 / 4th 6.14 / 5th 5.26:1

Frame

Tubular steel duplex cradle

Front Suspension

Telescopic forks non adjustable.

Front Wheel Travel

143 mm / 5.6 in.

Rear Suspension

Swingarm, dual shocks, preload adjustable.

Rear Wheel Travel

85 mm / 3.3 in.

Front Brake Single 296 mm disc
Rear Brake 179 mm Drum
Front Tyre 3.25-19

Rear Tyre

4.00-18

Rake

27°

Trail

95 mm / 3.7 in

Dimensions

Length: 2175 mm / 85.6 in.
Width: 870 mm / 34.3 in.
Height: 1170 mm / 46.1 in.

Wheelbase

1453 mm / 57.2 in.

Seat Height

810 mm / 31.9 in.

Ground Clearance

140 mm / 5.5 in.

Wet Weight

218 kg / 479 lbs

Fuel Capacity 

17 Litres / 4.5 US gal

Reserve

5 L / 1.3 US gal

Oil Capacity 

3.5 L / 3.7 US quarts

Consumption Average

6.9 L/100 km / 14.6 km/l / 34.3 US mpg

Braking Distance 48 km/h / 30 mph - 0

10 m / 32.9 ft

Braking Distance 97 km/h / 60 mph - 0

41 m / 135.7 ft

Standing ¼ Mile  

13.5 sec / 100.9 mph

Top Speed

198 km/h / 123.2 mph

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The CB750K5 Four was sold in 1975 and was available in one of two colors: Planet Blue Metallic or Flake Apricot Red. The instrument faces were dark green. The speedometer numbers were increments of 10 (i.e., 10, 20, 30, 40, etc.). The side covers were smaller than the K0 model and there were no slots on the leading edge. The upper forks were chrome. The white tank pinstripe was wider than the K3 model.

The headlight shell was black. The taillight and side reflectors were larger than the K1 model. There was a two-throttle cable system (pull open and pull closed). The exhaust system was a 4-into-4. The engine was a 736cc SOHC 2-valve dry sump inline 4 cylinder linked to a 5-speed transmission and chain drive. The serial number began CB750-2500001.