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  1. #1
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    New question here. Can I NOT fit a 180mm rear rotor on my '14 trance SX?

    Went to the Avid site, ordered the new centerline rotor, and post bracket part #00.5318.007.003 from:

    https://sram-cdn-pull-zone-gsdesign...._spc_rev_a.pdf

    Thing doesn't work. Flush doesn't work, and the stock spacers are too short. The part that Avid said should work (oriented the wrong way) makes it so only half the pads cover the rotor.

    Anyone have any experience up-sizing their rear rotor (from 170mm to 180mm) and had issues? Clearly I'm doing this wrong.


  2. #2
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    Post a pic of what you've done so far.

  3. #3
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    On my adv sx, I have 180mm rotor on the rear and it fits by using avid 185mm adapter.

  4. #4
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    I have the 40 mm post adapter, which I guess is not the right part:

    Can I NOT fit a 180mm rear rotor on my '14 trance SX?-br2041.jpg

  5. #5
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    I have just fitted the new sram rotor (180mm) with the help of a friend, on a trance adv 2015 using the shimano adaptor...

  6. #6
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    +40mm is not correct obviously since Trance has 170mm direct mount and +40mm would make it 210mm...

  7. #7
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    Until you look on avids site and see that that's the referenced part they say you should buy for a 180mm rear rotor. :/

  8. #8
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    Maybe if your bike came with 140mm direct mount...
    I have the +40mm front adapter which I got by mistake and it will only fit 203mm rotor, not 180mm

  9. #9
    RAKC
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    Looking at pic no way its 40mm tall, avid sizes on their adapters atr messed up because my front adapter says 40mm adapter to go from 160-180mm. Not at home to take a pic of extra adapter but I gave up trying to make sense of it.

    Problem is trance apparently uses some non standard rotor size (really wtf was the point lol) so adapting will be challenging. Just like avid adapters (post mount) won't work with Shimano.

    That being said I would go down to lbs and talk to them about an adapter since u need an adapter 1/2 as tall as normal (10mm instead of 20mm). Or go to hardware store and buy a couple 10mm tall aluminum spacers.
    Sent from my Nokia Stupid Phone using Tapatalk

  10. #10
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    I'm running 203mm front and rear on mine, no problems. I used these rotors with the stock Deores and now with the Zees. No special mounting brackets required.


    '08 Hardrock HRXC
    '09 Epic Comp
    '14 Trance SX -

  11. #11
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    I forgot in my last post to include that I first put the stock 180mm front onto the rear and a 203 on the front for a week before going 203 on the rear too. What I vaguely remember is that the front adaptor worked on the rear for that rotor......or so I think I remember.

    I have pictures somewhere of that setup as well if it would help.
    '08 Hardrock HRXC
    '09 Epic Comp
    '14 Trance SX -

  12. #12
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    Quote Originally Posted by MarinCRO View Post
    +40mm is not correct obviously since Trance has 170mm direct mount and +40mm would make it 210mm...
    Really? That seems like a lot of work for Giant to make a different post mount on the same generic triangle. Never would have thought.

  13. #13
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    I believe Trance has 170mm rear direct mount. There are 160mm versions of the bike but then adapter is different. Plus 40mm would probably fit 203mm rotor and not 180mm.
    Doesn't SX come with 170mm rear rotor on some sizesand it's attached directly?

  14. #14
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    SX comes with 170mm, yes. It is attached directly. I thought all these post sizes were standardized. Or, maybe Avid's site is wrong. The weird thing was that even the 40mm piece that I had used, used either orientation, didn't fit. Too tall if oriented with the arrow forward (as I would expect) and too short if oriented backward. In retrospect if it's meant to fit a 203mm, that kinda makes sense, but it's the piece on Avid's site they say to use for a 180mm rotor. -_-

  15. #15
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    This is for a '14 Giant Trance SX, right? Mine came with 160 or 165mm rears with the calipers directly mounted. The same rotor is now on the rear of my Epic and is using an Avid 160mm adaptor. You can see in my picture that the 203mm adaptor works with the 203mm rotors. Maybe Avid supplied the wrong one.
    '08 Hardrock HRXC
    '09 Epic Comp
    '14 Trance SX -

  16. #16
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    Yeah mine is the advanced SX, should be the same swing arm. Rotors are most definitely 170mm rear (avid 9 elixir trail 4 pots).

    The bike came with 6mm-ish spacers, that I substituted with the above-pictured adapter.

    I see that you have Zee brakes. Wonder if the shimano adaptor would work with the Avid brakes :/ I'd prefer to not have to run a 203 on the rear, I wear through tires too quickly as is and I want the slightly better modulation the 180 will provide.

    Really just wanted to get rid of the turkey warble. The centerline rotor fixed the issue on the front for me, was hoping it would do the trick on the rear as well.

  17. #17
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    I apologize, I missed the "advanced" portion. Disregard what I said. If you come up with an adaptor you want to try, let me know as I probably have it and I'll give it to you so you don't have to blow money experimenting.
    '08 Hardrock HRXC
    '09 Epic Comp
    '14 Trance SX -

  18. #18
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    No worries, I forgot to mention it - I also forgot it was relevant (spec change between models). My bad!

    I've got a request into my LBS to see if they can figure it out while I'm at work. I'll circle back up in this post when we figure out what the solution is for the avid line up.

    Thanks for the offer, hopefully my LBS can figure something out, I wouldn't want to put you out for a couple small parts adaptors.

  19. #19
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    I have the 2015 SX, which comes with 170mm in the back. I put a 200 rotor on the front and transferred the OEM 180 rotor and adapter from the front to the back without any issues. I think I had to juggle some spacers around to get it to fit, Avid has a comprehensive fit guide somewhere that explained it all.

  20. #20
    Giant Reign 27.5 2 LTD
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    Same question about fitting 4-bolts adapter to rear.
    Giant Reign 27.5 2 LTD
    Rear rotor 180, adapter sm-ma-f180p/p2
    Brakes - Saints M820

    I'd like to use same as on photo Can I NOT fit a 180mm rear rotor on my '14 trance SX?
    Is there any 180-P/PM adapter for 180 rotors for rear side?
    OK

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