Stainless Steel Brake Rotor - Honda CB450K 72-74 CB500/550

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Reproduction front brake rotor for the CB450K/500T and the CB500K/550. If the stock rotor is worn out or warped now's the time to install a brand new one! Whether it's for a restoration or a daily rider this is a great part especially if you're building a complete new wheel. Remember to use Loctite on the bolts that hold the rotor and torque them to spec, then adjust the bracket that holds the caliper. It's a good idea to replace the pads at the same time.

We also carry a drilled version of this rotor and complete kits for replacing the front brake system.


  • Made to exceed OEM specifications.
  • Rotor is made from SUS420 high carbon Stainless Steel.
  • Highest hardness among all the stainless steel grades with 12% chromium.
  • Excellent corrosion resistance and ductility for a long lasting high quality rotor.
  • Rockwell hardness is 35-45HRC
  • Cast Aluminum inner holder.

Replaces Honda Part Number: 45120-374-700

Note: This does not fit the CB450K 1970-1971 which had a finned caliper that looks like this.

Fits Honda:

CB450K Super Sport - 1972-1974
CB500K - 1971-1973
CB500T - 1975-1976
CB550F Super Sport - 1975-1977
CB550K - 1974-1978

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  • 3

    Posted by George on 12th Nov 2021

    Seems to be wearing a little odd but breaking is smooth as of yet. Not sure what I think of it after 300 miles. Time will tell