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  1. #1
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    Has anyone run the XTR Race M985 cranks single speed?



    Thinking of picking up a pair from ChainReactionCycles since they seem to be going for a good deal right now(259 pounds) . Plan to run the 30T chainring and sell away the 44T that comes with it .

    Might even pick up a Chris King BB with it.

    Has anyone used the cranks so far? how do they fare in terms of stiffness, durability and strength?

    I'm coming from a Middleburn RS7 setup with SKF BB .

  2. #2
    Mtbr Forum Sponsor - Homebrewed Components
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    i've sold quite a few rings for that crank, so there's defnitely SSers out there running them. It's actually ideal since you're not limited to 31t or 32t as your smallest ring. As for stiffness, it's going to be on par with other xtr cranks, which is pretty good. Same goes with durability. Shimano knows their cranks.
    With a 32t, they're about 645g, including bottom bracket and hardware.

  3. #3
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    I see, thanks! 645g is really light! My current Middleburn setup is already around 805g . If I saved weight any further, it would have to be at the BB. However, I think I will compromise durability from my SKF unit if I do so. Just wondering now if anyone has used the Chris King BB to positive/negative long term results .

  4. #4
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    Had a CK BB going for about 2 years, all year round in S. Ontario so it has everything thrown at it.

    I've only had to pop the seals off once to grease the bearings, and that was the end of this summer.

    It's $$ but performance is up there with the hubs and headsets IMO.

  5. #5
    more skier than biker
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    M985's: I use 'em and love 'em (w/Homebrewed's rings). They're great.

    Just picked up a King BB and have only used a handful of times...too early to tell




    Sebt frm my iPhne usig Tapaak

  6. #6
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    The King BB has a pretty robust warranty policy. That's saying something right there. At $120us, if the bottom bracket lasts 3 seasons, it's paid for itself because I go through at least one Shimano BB each year.

  7. #7
    Sir Crashalot
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    I will be. Have the cranks, need to order HBC ring and bash guard.

  8. #8
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    I would love to run these cranks but I honestly hate seeing the cut outs/mounting area on the outside of the ring. It would be great to have the ring mounted on the outside but that won't work since I can't really adjust my chain line (running WI hubs w/ a freewheel). I will keep my M960's until they break!

    CK bb will work great. I was going to buy one over the winter but blew my XTR one out a few days before a big organized ride and couldn't get one fast enough so I picked up an XT instead since it was local. Figure I will beat on that over the winter and maybe pick up a CK in the spring.

  9. #9
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    Quote Originally Posted by 1SPD View Post
    I would love to run these cranks but I honestly hate seeing the cut outs/mounting area on the outside of the ring. It would be great to have the ring mounted on the outside but that won't work since I can't really adjust my chain line (running WI hubs w/ a freewheel). I will keep my M960's until they break!
    Like this??

    Its all Shits and Giggles until somebody Giggles and Shits

  10. #10
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    Right, thanks guys for the replies! BY the way, sick looking IndyFab Tyrone Shoelaces!


    Ok, will be ordering the cranks in an hour or so! Still deciding between the 42-30 and 44-30 combination. True that I won't be running the outer chainring since I'm using SS though!

    Anyone knows of a better deal for the XTR race cranks besides CRC? With a 50 pounds voucher, I can pick up the XTR Race chain set for 209 pounds with free shipping.

  11. #11
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    Quote Originally Posted by TheGenTwo View Post
    Anyone knows of a better deal for the XTR race cranks besides CRC?
    Well, certainly too late for you but it could help others.
    At rcz bikeshop, with discount code RCZ10BE (valid until 10 dec 2011) I got it at 285
    RCZ Bike Shop SHIMANO 011 Chainset XTR 10 speed M985 30/42 175 mm Grey RCZ Bike Shop

  12. #12
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    Quote Originally Posted by Brewtality View Post
    Like this??

    Hi, just to ask where did you get those slots for the crank?

    Anyway, a lil update from my side. I just received the cranks last night after some delay by the Royal Mail service CRC uses. They are really sweet! I had them raceshield'd as well.

  13. #13
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    KCNC make XTR M980 triple-to-double conversion tabs now, black or colours and cheaper than XTR, but not quite as well matched.

    Clee Cycles - Product KCNC XTR Double Chainring Conversion

  14. #14
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    sorry to resurrect this thread but does anyone know the chainlines of inner and outer positions? 48.8 is per shimano but I'm assuming that's the halfway spot between the inner and outer (XTR M985).

  15. #15
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    Homebrewed components make them, but you will have to wait at least 8 weeks. Also, don't expect no one to answer your emails. I'm still waiting for mine...

  16. #16
    metrotuned WoS
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    What is up with the caps??? Where can one source them --- I've exhausted the search online for "XTR crankset chainring bolt caps / covers"

    I've found them online by searching "SHIMANO XTR M980 MIDDLE CHAIN RING BOLT & CAP SET/8"

    Anyone have a good source?
    #willofthesun and author of the most viewed MTBR thread: Platform Pedal Shootout

  17. #17
    max_29
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    Quote Originally Posted by illnacord View Post
    What is up with the caps??? Where can one source them --- I've exhausted the search online for "XTR crankset chainring bolt caps / covers"

    I've found them online by searching "SHIMANO XTR M980 MIDDLE CHAIN RING BOLT & CAP SET/8"

    Anyone have a good source?
    are you looking for something like this?:

    KCNC Chainring Bolts, Titanium Crank Bolts, KCNC, Aerozine

    on that page search for "KCNC Chainring Conversion Kit"

  18. #18
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    much cheaper than the shimano version


    Quote Originally Posted by max_29 View Post
    are you looking for something like this?:

    KCNC Chainring Bolts, Titanium Crank Bolts, KCNC, Aerozine

    on that page search for "KCNC Chainring Conversion Kit"

  19. #19
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    but the shimano version matches the crank much better.
    Attached Thumbnails Attached Thumbnails Has anyone run the XTR Race M985 cranks single speed?-xtr.jpg  

    Has anyone run the XTR Race M985 cranks single speed?-xtr2.jpg  


  20. #20
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    Are you guys using the double or the triple for this? (Sorry i dont know if they make both or not, just curious, thinking about upgrading my crank).

  21. #21
    metrotuned WoS
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    It's the 980 crankset (mine came in both double and triple versions). The 104BCD is key!!!
    #willofthesun and author of the most viewed MTBR thread: Platform Pedal Shootout

  22. #22
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    awesome, thanks! so 980 and 985 then right....?

  23. #23
    metrotuned WoS
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    Brian, not all 985. The XTR M985 Double has an 88bcd!
    #willofthesun and author of the most viewed MTBR thread: Platform Pedal Shootout

  24. #24
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    m985 & CK ceramic BB

    I have a set of 180mm m985 duo cranks running the 30T ring and a CK ceramic BB
    light, flex free and long
    BB spins soooooooo smoothly with the crease injector tool it's set for years of use.
    i am interested in the caps though and wil look into getting a set in red.

  25. #25
    bikeaholic
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    Quote Originally Posted by gsxrawd View Post
    but the shimano version matches the crank much better.
    That is what need. Where did u get that chainring and what brand.

    Thanks.

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