If you've been wanting to try SRAM's revolutionary XX1 drivetrain but couldn't afford it, there's very likely a more affordable X01 version dropping soon. Niner Bikes released an image of their new ROS 9 hardtail sporting the X01 drivetrain just yesterday, and previously hinted at the group's arrival.

The spec list for the ROS 9 includes:

  • SHIFTER: SRAM 11spd XO1
  • CASSETTE: SRAM XD-1195 11spd 10-42t
  • CHAIN: SRAM PC1170

Perhaps the biggest change to the group is the crankset, which will be made of aluminum. Compared to XX1, the spider looks to be much larger in the image shown above, meaning we'll see new chainring dimensions . Will the range still include 28 to 38-tooth rings? The photo here shows a 32-tooth ring and it's a tight fit, so we'll have to wait and see. Just like XX1, the new chainring uses an alternating thick-thin X-Sync tooth design to help with chain retention.

According to Niner's specs, it'll still use SRAM's PC1170 chain, the same hollow-pin 11-speed chain used in the XX1 group.

Out back, X01 retains the large 10-42 tooth cassette. Given the range, we expect that the same XD freehub body will be required. Note that part numbers on the cassette have changed, so it's likely that SRAM is using a different (cheaper) manufacturing method than the single piece cassette found on XX1.

The X01 derailleur uses SRAM's Type 2 clutch system and keeps the X-Horizon straight parallelogram design.

Niner's ROS 9 sports an X01 trigger shifter up front, but Grip Shift will also be available.

At this point SRAM hasn't confirmed anything, but an Australian bike shop claims pricing will be in the $1,000 to $1,200 range, and that the group will be available this September.

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  • Primoz

    6/21/2013 11:54 AM

    I wonder if Sram guys gave a thought about using a smaller pitch chain for the 11 spd grouppos...

  • chrisroot

    6/21/2013 11:23 AM

    can't wait till this is available! will be interesting to see if/how shimano responds... also here are some more pics of the new stuff: http://www.probikeswap.com/sram-x01-announced/

  • Northwest

    6/20/2013 9:03 PM


  • b-kul

    6/21/2013 11:43 AM

    hopefully with a wide range 10 speed cassette so it doesnt need a special driver. and we could use our existing shifters, that would rock.

  • Northwest

    6/21/2013 12:01 PM

    Yup, just need a thick-thin toothed chainring and a wider range 10sp.

  • b-kul

    6/21/2013 12:04 PM

    yeah, i got that ebay 42t ring and it works ok but a dedicated set up would rule.

  • SpokeApparel

    6/20/2013 9:47 AM

    Love to see tech progress. Personally, I've run 1x9 for years. Have never once wished I had an easier gear and there are some pretty steep and tech trails around these parts. I'm sure the guys and gals reluctant to go 1x9 will be more likely to go with something like this. Options for all.

  • silvbullit

    6/20/2013 8:14 AM

    So 11x32 is the highest gear...that spins out at what? 23-24 mph? For just about everywhere I have ridden, that won't cut it. I am now increasing my back-stock of 9-speed parts.

  • iceman2058

    6/20/2013 8:22 AM

    First of all, the small cog on the cassette is 10t, not 11. Second, you can always run a 34 or even a 36 upfront, depending on what kind of climbing you do. With a 42 out back, a 34t up front will still get you up a lot of stuff. Third, in this particular case, we are looking at a 29er, so factor that into your calculations as well.

  • silvbullit

    6/28/2013 9:41 AM

    I have to reply even though this is relatively old...so 10t nets around 1mph most likely so I will give you that. I would need a 36 or possibly a 34 out front for speeds that are regularly attained on nearly every trail I have ridden. I also enjoy cleaning every technical uphill I come across so I need a low enough gear that even my 34 pound mini-DH bike can clean the same hill that I can on a light hardtail. I also will not spend even $500 on a completely new drivetrain and wheels for an all-new hub standard let alone $1k+. I would rather spend time in the saddle than working my ass off to pay for the bike and parts that, for me, do not improve my cycling performance or enjoyment. And that is the point, right? Fun!

  • Primoz

    6/28/2013 9:52 AM

    I've said a couple of times, that the spread of an 11t cassette or a 1x11 setup is kinda small copared to a 2x10. A 44t cassette would definetly help (together with a 9t cog, all of that then neatly packaed in a 10 mm pitch system with an 11-~50 cassette in the same dimensions, diameter wise). Though based on my calculations, i could just barely make it with a 44-10 casette and a 30t in front, that would quite closely match my current 22-32 and 32-11 cassette setup.

  • 'size

    6/19/2013 7:17 PM

    santa cruz has an X01 build option available for their bikes as well...

  • MikeHoncho

    6/19/2013 5:00 PM

    who cares if the cranks are alloy or carbon? I bet they are light and stiff and the price is right. sounds good to me! 1x11 FTW.

  • Krispy

    6/19/2013 4:24 PM

    Dudes, I gotta say My XX1 group is amazing. It is not perfect, but after 6 month and 10 races it is a game changer and i can't imagine going back to a front derailleur. The range (for me) is perfect.
    The XX1 cassette is about the same weight as XTR 10 sp. This pic looks to be an XX1 cassette.
    Why wait to release 2 groups a year later than release them as they design them?
    The X9 cranks are hollow, and have the same splined spider mount as XO/XX1.
    It looks like they chose a 104mm BCD, that could make it less expensive to make, and that ring could be used on other 104 cranks.
    The rear Der is probably as accurate as XX1 but without carbon and expensive pulleys.
    All Good!

  • Maverickdh005

    6/19/2013 1:58 PM

    Trickle down is a wonderful thing but they should have released X09 at the same time, stop acting like Shimano Sram I am a huge Sram fan but youve done some funny thkngs in the last few years with releases. Btw been on XX1 for 8 months now its a game changer, only people who are jealous try to find issue with it, try it it before knocking it, give me a break adding a 42t going to affect weight at the back wheel, jees arse!

  • groghunter

    6/19/2013 12:52 PM

    I wanna know how much the cassette costs.... and weighs.

  • taletotell

    6/19/2013 11:07 AM


  • syngltrkmnd

    6/19/2013 10:09 AM

    I'm interested to see what the cassette winds up weighing. My (small) concern is shifting weight back to the rear wheel with a heavier cassette - something I have worked to mitigate with a light XO cassette and aftermarket wheels. I've come to appreciate the 'pop' and the suspension responsiveness of a lighter wheelset and high(er)-end drivetrain.

  • Triber66

    6/19/2013 10:08 AM

    Just need to make it in black!

  • Lawman

    6/19/2013 9:27 AM

    Looks like a non-series Crank as it doesnt say X0 anywhere on it, unlike the mech. So my guess is we'll see a carbon crank when the group is officially launched and this is just an option for saving money over the carbon if people want to go 1x11 but cant afford the whole groupo, as the arms just look like standard x9/x7 ones with the fancy tooth profiles. Can't imagine they'd suddenly downgrade X0 to aluminium arms

  • nickb01

    6/19/2013 9:37 PM

    According to the info our shop got, X01 OEM comes with non-series cranks, X01 Aftermarket will come with the familiar X0 carbon goodness.

  • Lawman

    6/20/2013 2:08 AM

    Sounds about right, seems odd that these cranks don't have X0 plastered all over them like the mech and presumably shifter too. I can see them doing X01 with a few colour options aftermarket, just like they do currently and to make it stand out visually compared to xx1

  • JMHV

    6/19/2013 12:32 PM

    Since they grabbed the XO crank arms to make XX1, I bet this crank is the X9 and will be the standard XO crank arm moving forward. This keeps XX (and XX1) as premier groups and sets up XO to be better-defined as the next group down.

  • Mr. P

    6/19/2013 9:14 AM

    Surprised by the crank. But I guess Sram have to maintain a reason to keep riders buying XX1.


  • iceman2058

    6/19/2013 8:52 AM

    Looks sweet!
    Regarding the chainring issue, there's always the new 30t chainring from Race Face, which fits a standard 104 bolt pattern, if your legs don't like the 32...

  • b-kul

    6/19/2013 9:16 AM

    looks to me to be a spider less crank anyways.

  • Apostt

    6/19/2013 8:52 AM

    Design is awful.

  • ryan_daugherty

    6/19/2013 8:56 AM

    Nope, I have XX1 and it's amazing, not awful. So at the least X0. I have to admit the white/red graphics are a bit ho hum. but they rub off from your shoe anyway so who cares.

  • jerryhazard

    6/19/2013 8:52 AM

    $1000? That's all???

  • bturman

    6/19/2013 9:01 AM

    That's a savings of $450 over the $1450 XX1 group. Still not cheap by any means, but better.

  • iceman2058

    6/19/2013 9:03 AM

    And there's still X09 to look forward to!

  • mccarver

    7/25/2013 5:06 PM

    me thinks it'll be X91 (XX1, XO1, X91, etc..)

  • bhalpin47

    6/19/2013 10:25 AM

    Hoping to be able to afford the X71 when it finally trickles down! =P

  • 'size

    6/19/2013 11:55 AM

    and a standard 10sp XO 1x10 drivetrain? almost $1200 MSRP. even if you swap the carbon XO crank for an X9 alu model you're still at a grand.

  • Primoz

    6/21/2013 10:36 AM

    Does that 1200 MSRP include brakes?

  • 'size

    6/21/2013 10:52 AM

    no. brakes aren't considered part of the drivetrain.

    SRAM X0 10-Speed Trigger Shifter - 123
    SRAM X0 TYPE 2 Rear Derailleur - 260
    Truvativ X0 10-Speed Crankset - 444 (cheapest option)
    SRAM XG-1080 Cassette - 280
    SRAM PowerChain 1091R - 65

    TOTAL - 1172

  • pedalhound

    6/19/2013 8:48 AM

    Do Want!

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