1969-70 CB750K0 Four
- It was available in one of three colors:
- Candy Blue Green
- Candy Gold
- Candy Ruby Red
- The tank, side covers, and upper forks were of the basic color (green, gold, or red)
- The headlight shell was also the basic color
- The bike had a 4-into-4 throttle cable system
- 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 CB750-1000001.
1970-71 CB750K1 Four
- It was available in one of four colors:
- Candy Ruby Red
- Candy Gold
- Valley Green Metallic
- Candy Garnet Brown
- The gas tank stripe was gold
- The tank, side covers, and upper forks were of the basic color (red, gold, green, or brown)
- The side covers were smaller and there were no slots on the leading edge
- There was a two-throttle cable system (pull open and pull closed)
- The headlight shell was also the basic color
- 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 CB750-1044650.
1972 CB750K2 Four
- It was available in one of three colors:
- Brier Brown Metallic
- Flake Sunrise Orange
- Candy Gold
- The gas tank stripe was gold
- The side covers were smaller than the K0 model and there were no slots on the leading edge
- The upper forks were chrome
- The headlight shell was black
- The taillight and side reflectors were larger
- 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 CB750-2000001.
1973 CB750K3 Four
- It was available in one of three colors:
- Flake Sunrise Orange
- Candy Bucchus Olive
- Maxim Brown Metallic
- The gas tank stripes were white, gold and black
- The side covers were smaller than the K0 model and there were no slots on the leading edge
- The upper forks were chrome
- 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 CB750-2200001.
1974 CB750K4 Four
- It was available in one of three colors:
- Flake Sunrise Orange
- Freedom Green Metallic
- Boss Maroon Metallic
- The gas tank stripes were white, gold and black
- The side covers were smaller than the K0 model and there were no slots on the leading edge
- The speedometer showed increments of 20 (i.e., 20, 40, 60, 80, etc.)
- 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 CB750-2300001.
1975 CB750K5 Four
- It was available in one of two colors:
- Planet Blue Metallic
- 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.
1976 CB750K’76 Four
- It was available in one color: Candy Antares Red
- The instrument faces were light green
- 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 CB750-2540001.
1977 CB750K’77 Four K
- It was available in one of two colors:
- Candy Alpha Red
- Excel Black
- The gas tank stripe was gold with a white and red pinstripe
- The “750 FOUR K” side cover emblem was gold
- 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 CB750-2700009.
1978 CB750K’78 Four K
- It was available in one of two colors:
- Candy Alpha Red
- Excel Black
- The gas tank stripe was gold with a gold and red pinstripe
- The “750 FOUR” side cover emblem was a graphic design
- There was a “K” side cover decal and stripe
- The seat is contoured in a two-stage design
- 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 CB750-2800001.
1979 CB750K’79 Four K
- It was available in one of three colors:
- Candy Muse Red
- Candy Bayard Brown
- Black
- The taillight lens was a wraparound unit with a painted cowling
- The exhaust system was a 4-into-4
- The speedometer had a 150 mph (240 kph) limit
- The engine was a 749cc DOHC 4-valve inline four cylinder linked to a 5-speed transmission
- The serial number began RC01-2000001.
1979 CB750K’79 Limited Edition
- It was available in one color scheme: Candy Muse Red with Red
- The gas tank and side covers were 2-tone
- The wheels were black comstar
- There was a separate taillight assembly with the 1978 style lens
- The “10th ANNIVERSARY CB750K” side cover emblem was gold and green
- The engine was a 749cc DOHC 4-valve inline four cylinder linked to a 5-speed transmission
- The serial number began RC01-3000006.
1980 CB750K’80 Four K
- It was available in one of two colors:
- Candy Muse Red
- Excel Black
- There was a separate taillight assembly with a chrome bracket
- The speedometer had a 85 mph (135 kph) limit
- The engine was a 749cc DOHC 4-valve inline four cylinder linked to a 5-speed transmission
- The serial number began RC01-2100005.
1981 CB750K’81 Four K
- It was available in one of two colors:
- Candy Muse Red
- Cosmo Black Metallic
- The speedometer had a 85 mph (135 kph) limit
- The 4-into-4 mufflers had a new megaphone design
- The front forks were air-adjustable
- The engine was a 749cc DOHC 4-valve inline four cylinder linked to a 5-speed transmission
- The serial number began JH2RC010*BM200001.
1982 CB750K’82 Four K
- It was available in one color: Candy Imperial Blue
- The speedometer had a 85 mph (135 kph) limit
- The front forks were air-adjustable
- The front disc brakes were slotted with twin piston calipers
- The 4-into-4 mufflers had a megaphone design
- The engine was a 749cc DOHC 4-valve inline four cylinder linked to a 5-speed transmission
- The serial number began JH2RC010*CM300003.