tech help: o-rings needed on sram X.0 cranks?- Mtbr.com
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  1. #1
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    tech help: o-rings needed on sram X.0 cranks?

    So I bought a second hand x.0 crankset on ebay (too bad they werent in as good as shape as I tought)

    But there seem to be 2 o-rings mounted on the drive side

    tech help: o-rings needed on sram X.0 cranks?-11392807_10152850857766373_867129936391052080_o.jpg

    anybody any idea what they are for? adjusting chainline?

    Already searched the net but the closest thing that I've found was this
    But the arent o-rings

    2013 EC Custom Salsa Fargo Ti Build | Endless Cycles Blog

  2. #2
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    They look like actual O rings not spacers. Weird. I've had mine apart but can't remember. Is that a BB30 spindle?

  3. #3
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    They look like seals from the bottom bracket. The service manual has pretty good pictures for all the different crank/ BB combos:

    https://www.sram.com/sites/default/f...e_manual_0.pdf

  4. #4
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    I contacted te seller.

    This is what he said:

    "Hi Steve
    My local bike shop mechanic (Muddybums) put them on for me as he believes with these on they protect the drive side bottom bracket cup better.
    No need to keep them on there if u don't need them but I ran them on there from his recommendation and it was faultless."

    Thx for the reply anyway

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