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  1. #1
    mtbr member
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    Giant Trance 29er 2 and XTR M975 calliper issues!

    Hi all,

    So I've recently bought a Giant Trance 29er 2 and a s/h XTR M975 groupo to put on it...

    The thing is, the rear caliper (IS) doesn't get anywhere near the rotor it's meant to be stopping! I've managed to connect the front kit using a 160mm postmount adapter on the caliper, but the rear is a mystery! It seem my only option is to buy a new rear rotor that's larger than the current ice-tech on my bike?

    I've tried several adapters, none work. They all seem to push the XTR caliper further away from the frame / rotor, when I'm supposed to be getting closer!

    What am I (and my local bike store) missing?

  2. #2
    mtbr member
    Reputation: Cotharyus's Avatar
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    Jun 2012
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    1,194
    Not really enough information here to help. So it's a Trance. 2013? 2014? What size rotor is on the back?

  3. #3
    rebmem rbtm
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    Post some photos.

    IS mount brake calipers come in different sizes.


    On the left is a 160mm front/140 rear brake caliper and on the right is a 180mm front/160mm rear brake caliper.

    Giant Trance 29er 2 and XTR M975 calliper issues!-p4pb8373418.jpg

    160mm post mounts + 180mm front/160 rear brake caliper + 160mm adapter = 180mm rotor

    Giant Trance 29er 2 and XTR M975 calliper issues!-5565496867_354cb87ce2_z.jpg

    160mm post mounts + 160mm front/140 rear brake caliper + 160mm adapter = 160mm rotor

    Giant Trance 29er 2 and XTR M975 calliper issues!-img_0425.jpg

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