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  1. #1
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    front post mount 180mm shimano adapter for rear?



    I am putting shimano xtr rear brakes and 180mm rotor on my Anthem X 29. My adapter I have is not right as it is for IS. Is it correct to use the same front post mount adapter on the rear with my set up? I asked my shop and they said that they did not see a specific rear adapter for this set up and were not sure.

    Thanks for any input.

  2. #2
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    Quote Originally Posted by DanielM3


    I am putting shimano xtr rear brakes and 180mm rotor on my Anthem X 29. My adapter I have is not right as it is for IS. Is it correct to use the same front post mount adapter on the rear with my set up? I asked my shop and they said that they did not see a specific rear adapter for this set up and were not sure.

    Thanks for any input.
    Usually, an adapter that works for a 180 front, works for a 160 rear.. a 160 front works for a 140 rear...and so on...

  3. #3
    Nouveau Retrogrouch SuperModerator
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    Quote Originally Posted by DanielM3


    I am putting shimano xtr rear brakes and 180mm rotor on my Anthem X 29. My adapter I have is not right as it is for IS. Is it correct to use the same front post mount adapter on the rear with my set up? I asked my shop and they said that they did not see a specific rear adapter for this set up and were not sure.

    Thanks for any input.
    Post mount spec is the same front and rear (axle to caliper mount). A 180mm rotor post mount bracket is the same for front or rear.
    mtbtires.com
    The trouble with common sense is it is no longer common

  4. #4
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    Quote Originally Posted by shiggy
    Post mount spec is the same front and rear (axle to caliper mount). A 180mm rotor post mount bracket is the same for front or rear.
    Sorry, I was referring to PM to IS adapters...

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