Topic: 72 cb500 disc brake piston interchangeability

[Quorthon]

I have a 72 cb5oo four that needs a brake piston.

Are there any other bikes I can pull one out of?

I could possibly get the front or rear pistons out of a 79 cb750.

Will that fit?  Any others?

[bryanj]

No, one of the golwing ones will fit as long as you have usd pads andi think maybe an SOHC 750 as the seal is the same but havent tried that one

[midnightrider]

Search the part number at bikebandit.com and you can see what models it fits.
Here are the results for the brake piston, Part # 45107 323 020

1971 Honda CB500   
1972 Honda CB350F   
1972 Honda CB450K5   
1972 Honda CB500K1   
1973 Honda CB350G   
1973 Honda CB450K6   
1973 Honda CB500K2   
1974 Honda CB350F1   
1974 Honda CB360   
1974 Honda CB360G   
1974 Honda CB450K7   
1974 Honda CB550   
1975 Honda CB360T   
1975 Honda CB400F   
1975 Honda CB500T   
1975 Honda CB550F   
1975 Honda CB550K1   
1976 Honda CB360T   
1976 Honda CB400F   
1976 Honda CB500T   
1976 Honda CB550F   
1976 Honda CB550K   
1977 Honda CB400F   
1977 Honda CB550F   
1977 Honda CB550K   
1978 Honda CB550K