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  • My head hurts
  • Xylene
    Free Member

    I have older style Deore XT brake setup, dual control with calipers.

    I bought a post mount to IS adapter thinking they were IS,but now I think they might actually post mount all along.

    What does an IS calliper look like and a post mount caliper?

    CraigW
    Free Member

    Measure the distance between the bolt holes.
    IS: 51mm
    Post mount: 74mm

    Xylene
    Free Member

    Cheers.

    They came with an adapter fitted,so always presumed IS

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