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  1. #1
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    Reputation: Rollin'in'Zona's Avatar
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    New question here. Aftermaket chairings for XTR 970 / 980 / 985

    Hi there,

    Never run XTR cranks. Can I use aftermarket rings on either XTR 970 / 980 / 985?

    Thanks!

    EDIT: Found the answer in another thread: "There's is a 980 crankset and a 985 crankset. The 980 has a 3 and also a 2 chainring configuration options which use the same crankarms with std 64/104 BCD. The 985 uses a specific 88 BCD and is 2 rings only (and also has a higher teeth number than the 980 double) "
    Last edited by Rollin'in'Zona; 05-10-2013 at 01:07 PM.

  2. #2
    Plays with tools
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    Shimano makes some of the best shifting chainrings on the market, I'd stick with OE rings if the gearing works for you. If it doesn't I'd probably buy a different crank all together.

  3. #3
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    Quote Originally Posted by customfab View Post
    Shimano makes some of the best shifting chainrings on the market, I'd stick with OE rings if the gearing works for you.
    The XTR gearing does NOT work for me. SRAM does, but I will not use carbon. X9 is heavier than I want.

    Quote Originally Posted by customfab View Post
    If it doesn't I'd probably buy a different crank all together.
    Wow... all or nothin eh? Seriously? Please explain your thinking.

    Are other rings just not "worthy" of Shimano cranks? Or are you thinking about the cost aspect. The cost, while certainly of interest, at this point in my life will not keep me from getting what I want. Light weight METAL cranks with 24/36 (38). That's what I want. If I can get the rings from Shimano, all the better. If not, I'll use the best I can get.

    I started runnin 2x9 XT cranks with 24/36 RacFace rings in 2003 on my FR bike.

    It worked so well for me that I installed, and have been running TX cranks with 24/36 2x9 Black Spire rings on my El Guapo since 2007.

    I ran XT cranks with RaceFace 36T 1x9 on my SuMo DH also...

    Thousands and thousands of miles of pedaling with Shimano cranks and aftermarket rings on three bikes... It's worked perfectly!

    I'm sure shifting with the new Shimano / SRAM rings is *better*, but I also believe it's mostly marketing hype. Learn when to shift. After 20 years pedaling, I don't shift under load. Anticipating the shift and adjusting tension to make it happen is part of the skill set.

    Of course, if you're a serious competitor in a sprinting race where economics to justify the expense are in play, every tiny improvement is welcome. But how many people fall into that category?

  4. #4
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    running the specific Blackspire M980 rings, no issues here.

  5. #5
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    My bike came with a non-series Hollowtech II crank that I am told is basically XT. I am running Raceface Turbine rings. They shift better than the stock Shimano rings.

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