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  • Brake caliper adaptors
  • rossburton
    Free Member

    I’ve an unmarked adapter that my LBS claims matches a 180mm front PM/IS adapter.  Is this identical to a 160mm rear adapter?

    rossburton
    Free Member

    The answer is yes: http://blog.artscyclery.com/keeping-the-rubber-side-down/rubber-side-down-disc-brake-adapters/

    tl;dr: IS assumes 160mm front and 140mm rear.  The adapters are actually +0 +20 +40 +60 +63.

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