Disc brake calipers- standard fitting?

Discussion in 'Bicycle Mechanics and Repairs' started by grellboy, 6 Mar 2019.

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  1. grellboy

    grellboy Über Member

    I am looking to replace my brake calipers on my Caadx. They are promax disc calipers (160/140). Having difficulty finding replacements but have seen several generic calipers. Is there a standard fit? My current brakes are 2 bolt, so would generic 2 bolt calipers fit?
     
  2. Cycleops

    Cycleops Guru

    Location:
    Accra, Ghana
    As far as I am aware there are two types of disc caliper fixings, flat mount and post mount.
    Sellers should state which they are.
    You should be able to identity which yours are from these pics.

    u17in.jpg
    Post mount.

    Shimano-BR-RS805-flat-mount-standard-brakes04.jpg
    Flat mount.
     
  3. Yellow Saddle

    Yellow Saddle Veteran

    Location:
    Loch side.
    Three types, ISO, post mount and flat mount. In historic order.
     
    raleighnut likes this.
  4. OP
    OP
    grellboy

    grellboy Über Member

    This is my rear brake, although the front one has the bolts spaced further apart.
     
  5. OP
    OP
    grellboy

    grellboy Über Member

    Rear
     

    Attached Files:

  6. vickster

    vickster Legendary Member

    Maybe post a pic of how/where it's actually attached to the bike
     
  7. I like Skol

    I like Skol Hold my beer and watch this....

    Location:
    Ashton-under-Lyne
    That's a flat mount caliper, the front will sit on an adapter plate to allow for different size rotors. I have flat mount Spyres on my latest bike and am happy with them. What is the reason for replacing the original units?
     
  8. I like Skol

    I like Skol Hold my beer and watch this....

    Location:
    Ashton-under-Lyne
    Just a warning, you may have mix-&-match flat mount at one end and post mount at the other, you need to check.
     
  9. Cycleops

    Cycleops Guru

    Location:
    Accra, Ghana
    Can't actually see the mounts very well from your pics.

    This was the subject of another almost identical question a year ago;
    https://www.cyclechat.net/threads/a...tential-mechanical-disc-brake-upgrade.231422/
     
    Last edited: 6 Mar 2019
  10. I like Skol

    I like Skol Hold my beer and watch this....

    Location:
    Ashton-under-Lyne
  11. si_c

    si_c Veteran

    Location:
    Wirral
    If you're looking to replace your disc calipers, might I suggest the TRP Hy/Rds over the Spyres as your top choice - certainly for the front - the difference in price isn't huge, but they are worth the extra.

    From what I understand, the Promax brakes are adequate, but not great. The Spyres/Hy/Rd are both excellent but the latter has the edge just because you never need to adjust the pads.
     
  12. OP
    OP
    grellboy

    grellboy Über Member

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