New Life for a 1971 Honda CB450 K4

(Page 4 of 4)

By Margie Siegal
July/August 2007
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A scrambler model, with high pipes, 9:1 compression and three color options was added in 1967. For 1968 the Black Bomber gained a fifth gear and a bigger oil pump. Power increased from 43hp to 45hp at 9,000rpm, and a new frame increased the wheelbase to 54.3in from 53in. In addition to black, buyers had the option of candy red or candy blue.

1969 was also the first year for the Honda CB750, the first Japanese made, large capacity inline four, and the CB450 quickly came to be seen at the 750’s little brother. A front disc brake was added in 1970, and after that the CB450 received largely cosmetic changes until it was replaced with the CB500T in 1975. MC

Read more about the motorcycles mentioned in this article:
• Honda CB450: The Black Bomber 
• Honda CB750 Four: A Classic for the Masses 

 

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Archived Comments

  • Gerald 8/17/2009 1:11:26 PM

    I have a CB450 1970 model. Not charging. Can't seem to find a stator or alternator for it. Is there any way to put a later model electric charging system on it? Or, can anyone tell me what I should do to get it charging? Thanks

  • TommyD. 7/15/2009 5:53:04 PM

    I had a '72 CL450 and it was reliable and fast enough for California roads, including the mountain twisties.
    The only problem was when the shift rod which traverses the motor, snapped. In 5th gear. Easy to change though.
    Joy ended with a T-bone into a drugged out cab driver.

  • Miked 4/21/2009 7:16:31 PM

    I recently acquired a 1971 CB450, it runs but runs ruff. I would like to rebuild the engine and the transmission but I can not find anyone that has the parts. Do you guys sell parts or know where to get them?
    Any help would be greatly appreciated,
    Thanks,
    Mike

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