Are the "new" XTR 970 cranks...- Mtbr.com
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  1. #1
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    Are the "new" XTR 970 cranks...

    Friendly with typical 104 BCD rings? I know that the 960 series required a special 102 BCD ring, but it appears that the new 970s may play friendly with my collection of single-speed rings.

    Is this true?

  2. #2
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  3. #3
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    Yes, I know they're 104 BCD, but I haven't seen anybody running them with non-S rings.

    Even if the BCD is the same, they could have done things to the spider to make them not play well with the general 104 ring population, and require rather a special ring. That's why I ask.

  4. #4
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    Taken off the Competitive Cyclist web site.

    "The Shimano FC-M970 XTR crankset can accept non-XTR replacement rings."

  5. #5
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    Sweet, Thanks.

  6. #6
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    I have them on my single speed. They're awesome.

  7. #7
    oh crap...
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    I run Salsa "no ramps or pins" SS chain rings on mine.
    Grow some food for yourself.

  8. #8
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    I run a Boone Ti 32T chainring and sometimes I switch over to a Spot Brand 34T aluminum chainring on mine.

    No problems.



    First thing I did when I bought the crankset was pull the XTR rings off and sell them. I have never run Shimano rings on this crankset.

  9. #9
    Mac & Jacks African Amber
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    Why no Love for Shimano CR

    For the uninformed, namley me, what is not desirable about the Shimano CR?
    My Current Rides:
    '09 Trek 69er SS '08 Trek 69er 3x9 HT
    Clydesdale Certified @ 6' 4", 258 lbs.

  10. #10
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    Quote Originally Posted by LongviewTx
    For the uninformed, namley me, what is not desirable about the Shimano CR?
    From what I hear, they're great; but they are very expensive to replace when the time comes.

  11. #11
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    I'm running them with a Blackspire chainring. If I remember right when I bought mine the rings were worth more than the cranks themselves.
    Suck Less, Be Better

  12. #12
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    Quote Originally Posted by Ultraman
    I'm running them with a Blackspire chainring. If I remember right when I bought mine the rings were worth more than the cranks themselves.
    Very true. Chainreaction sells the crankset for the lowest price it looks like. And it is just expensive enough for free shipping. Sell the rings on eBay and you've got a super light SS crank for cheap.

  13. #13
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    Quote Originally Posted by LongviewTx
    For the uninformed, namley me, what is not desirable about the Shimano CR?
    You don't want ramped/pinned rings for SS use, the chain will try to shift off the ring every time you lean the bike so the chain gets pulled onto the shift ramps

  14. #14
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    Quote Originally Posted by rockyuphill
    You don't want ramped/pinned rings for SS use, the chain will try to shift off the ring every time you lean the bike so the chain gets pulled onto the shift ramps

    You must run a realllllly slack chain if you're having this issue.

  15. #15
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    Or he's leaning the bike extremely for the ramping to pick up... don't underestimate the ability of the shifting ramps/pins,
    Authorities speculate that speed may have been a factor. They are also holding gravity and inertia for questioning.

  16. #16
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    Quote Originally Posted by Caffeine Powered
    Or he's leaning the bike extremely for the ramping to pick up... don't underestimate the ability of the shifting ramps/pins,
    if you're running a single ring, on a singlespeed, which ramps and/or pins will the chain be trying to shift onto?

    Ramps and pins are for shifting the chain on to a ring, not off of it.

  17. #17
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    So the most recent set of heavily used M970 XTR cranks went for $290 shipped on ebay.

    Thanks to your insight, I ordered a brand new set from Chain Reaction for $295 shipped. Looks like brand new chainring sets usually fetch $100 to $140 on ebay, so hopefully my final cost should be in the ballpark of $160 to $200.

    I think I'll be happy with that. Not a bad crankset for a paltry Surly 1x1.

  18. #18
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    We might be missing a little currency conversion here.

  19. #19
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    Quote Originally Posted by Traktor
    We might be missing a little currency conversion here.
    Nope. Dollars.

  20. #20
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    Wow, that is a nice deal. Enjoy.

  21. #21
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    Quote Originally Posted by johnmyster99
    So the most recent set of heavily used M970 XTR cranks went for $290 shipped on ebay.

    Thanks to your insight, I ordered a brand new set from Chain Reaction for $295 shipped. Looks like brand new chainring sets usually fetch $100 to $140 on ebay, so hopefully my final cost should be in the ballpark of $160 to $200.

    I think I'll be happy with that. Not a bad crankset for a paltry Surly 1x1.

    Did you purchase the XTR 'FITTED' from them?? The only price I saw was 348 and some change for an XTR that wasn't in my size of 175mm. Anyone know what Chain Reaction means by 'FITTED' ??

    http://www.chainreactioncycles.com/M...?ModelID=32150

  22. #22
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    "FITTED" in English translates to "new bike take off" in American . That's the one I got. I imagine it won't come with the box, instructions, or any of the tools. I already have the bottom bracket cup tool, and the other two "special" tools that the complete retail setup will come with aren't all that necessary.

  23. #23
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    Scratch that. Read my own link to Chain Reaction and discovered the print at the bottom that explains the meaning of 'Fitted' as previously installed..

    Wow.. I can type without reading and speak without listening... doh..

  24. #24
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    Quote Originally Posted by johnmyster99
    "FITTED" in English translates to "new bike take off" in American . That's the one I got. I imagine it won't come with the box, instructions, or any of the tools. I already have the bottom bracket cup tool, and the other two "special" tools that the complete retail setup will come with aren't all that necessary.
    Thanks! You posted as I typed. Think I'm gonna go git me one of dem der fitted cranks!!

  25. #25
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    Looks like Chainreaction raised their prices on the regular cranks. They used to be ~$280.

  26. #26
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    yea i got them for 389 shipped off the bay then went with the live.com deal and in sixty days ill have my 100 back so i got em for 290 to my door and ebayed the rings for 150.. so not to bad a deal...

  27. #27
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    Quote Originally Posted by Schmucker
    Looks like Chainreaction raised their prices on the regular cranks. They used to be ~$280.
    This brutally handsome and well-hung guy explains it brilliantly.

  28. #28
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    According to the email confirmation I just got, my 'fitted' cranks shipped within 48 hours of order placement. We'll see how soon they arrive.

    Yesterday they also receeived stock in all the sundry XTR crank lengths, at $335 or so, a small margin above the $295 fitted cranks, but at the ability to choose any of six various lengths.

    Yay for the strengthening dollar against european currencies.

  29. #29
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    So I got a question about the weight of these bad boys when set up with non ramped chainring. How much is it weighing when you take the riple ff and replace it with a single.

  30. #30
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    Quote Originally Posted by ne_dan
    So I got a question about the weight of these bad boys when set up with non ramped chainring. How much is it weighing when you take the riple ff and replace it with a single.
    Just weighted mine. They are 180mm with a Salsa 34 tooth ring= 705 grams

  31. #31
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    sweet deal thanks, are you running the stock chainring bolts or did you have to pick up some shorter ones?

  32. #32
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    I used SS bolts not the stock ones. I was thinking about going with aluminum bolts but decided to stick with steel. This is also a new crankset so there is a ton of extra grease. I nay get a king BB also but donít think that will affect the weight much if at all.

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