2011 SRAM XO Groupset


Some pictures of the new 2011 SRAM XO groupset, taken at their recent press event in Ashland, OR. Click on photos for larger image.

From the SRAM Website:

“Battle Tested Bringing the first 2X10 MTB gearing and Avid’s full-featured brake to the legendary X0 line gives you a product family ready for any XC, Trail, All-Mountain, or DH battle. The X0 Ten Speed drivetrain, anchored by Truvativ’s full carbon crankset, takes advantage of XX technologies like X-Glide shifting, X-Dome cassettes, and wide range 2X10 gearing, while Avid X0 brakes dish out all the power and control you can handle. It’s time to ride. ”

XO Rear Derailleur:


* SRAM Exact Actuation for precise and dependable 10-speed performance
* New Chassis – focused design for all conditions and usage
* 190 grams – Super light weight and durable
* 36 tooth cassette capability
* 3 cage lengths available – Short for DH, Medium for 2X10 and Long for 3X10
* 4 graphic colors available, Black, Red, Gold and Blue

Speeds 10-speed for 2X10 system
Weight 190 grams
Colors Black, Red, Gold, Blue
Outer Cage Carbon Fiber Composite
Compatibility 10-speed only; 36 tooth
Inner Cage Forged Aluminum
Bearings Sealed Bearings
Cage Sizes Short, Medium and Long
Pulleys Sealed Bearing pulleys
Technology Exact Actuation Ratio, Direct Route Technology

XO Brakes:



“Since its inception, X0 has made a name for itself as the top line in precise and reliable shifting. Now Avid is introducing the first brake that has ever had the distinction of the X0 name – not to mention the versatility, intuitive design, and sexy good looks that come with it. This full-featured brake can stop on a dime or be feathered with precision you have to feel to believe. At only 333g, X0 packs all the power and control you have come to expect from the Avid Elixir line of brakes into a trim and slim package tough enough for any trail surprises. All-new forged aluminum calipers and lever bodies deliver robust power at a fraction of the weight, and with detented tool-free Contact Point Adjustment, you’re just a few clicks from your perfect ride.”

Weight 333 grams (160mm rotor; front post mount)
Lever Material Carbon Fiber Lever, Aluminum Body
Caliper Design 2 Piston, Forged 2-piece Aluminum, Adjustable Banjo
Finish Black Onyx w/X0 graphic in Red, Blue, Gold or Black
Rotor G3 CleanSweep 160mm, 185mm, 203mm, 140mm Rear Only
Pad Organic, Top Loading w/Aluminum backing plate
Fluid DOT 5.1
Mount Ambidextrous
Adjustment Contact Point Adjustment, Reach Adjustment, Adjustable Banjo, Tri-Align Caliper Positioning
Special Features TaperBore Technology, MatchMaker X Compatible

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About the author: Gregg Kato

Gregg Kato studied journalism and broadcasting in college while working many different jobs including deejaying, driving a forklift and building web sites (not all at the same time). Kato enjoys riding local Santa Cruz trails. Besides being an avid mountain biker, he is also a motorcycle fanatic. Two wheels, one Passion.

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  • DaGoat says:

    Yeah, but what we really want to see is the XO 10Spd Grip Shift! No XX in my whirld until that happens! I know… “soon”!

  • Brian says:

    Have installed the entire system on my 07 IH Mark III 5″ trail bike. Having come from the 3×9 system (Fnt 22/32/44 & Rear 11-32) and multiple riding trail with a complete mix of gradual and steep climbs, fast flats and rough and fast down hill trails, I was skeptical of the range that the 2×10 system would offer. Probably, the hardest decision was whether to commit to the 26/39 front or the 28/42 option. I based my decision off of simple math with my common gear choices used on my 3×9 for each extreme. For extremely hilly stuff I could do it fine in the 22 front ring & 28 rear cog; thus, I equated the 2×10 option equivalent to be 28 frt & 34 rear. Therefore, I knew that 28/36 would make a bit easier than 22/28, but could not quite equal my previous option of 22/32. So, far I’ve found myself using the 28/32 for gradual climbs and 28/36 on the steep stuff. I actually think that a 27/42 option would have been even better. For the front, I’ve found that the 42 ring with 11-36 10 spd option in the back has been a pleasant change from jumping back and forth from the middle to big ring with the 3×9. Pretty much, I stay in the 42. Until I get to the climbs or approaching the 36 cog, then I drop down to the 28 up front. I find myself only using the largest 3 cogs in the back with the 28 up front while climbing. Anything else gets done in the 42. I must note that the shifting performance is absolutely crisp and perfect each time. And for the mechs like myself, initial set up and fine tuning the install is quite simple. Only hard part is guestimating how much the front derailleur will turn as you tighten down the clamp bolt. It’s final tightening turns it toward the rings, so you have to loosen push it back in the oposite direction slightly and try again until the final clamp torque gets the guide parallel with the rings.

    Note: I matched all the XO drivetrain to a XX Cassette and 1091R chain.

    For those still wondering whether to make the 2×10 leap, if you find the 2×10 too expensive and don’t mind the extra shifting up front then stick with 3×9. If you’ve decided to take the leap to 2×10 then use the 28/42 & 11-36 for those with strong legs or the 26/39 & 11-36 for everyone else or if your trails continue to send you heading up more than down.

  • Eric says:

    Just installed full silver (“Bling!”) x0 drivetrain on my RacerX 29er. I think it looks better than XX. Can’t say that I have ridden XX, but this certainly shifts better than anything I’ve ever been on. I was a bit hesitant about getting rid of a 22/34 low gear on a 29er for a 26/36, but I have found the 26/39 adequate for the short quick climbs we have around here. In areas with more extended climbs, you should keep a triple, especially on a 29er.

    I use the 39 virtually all the time and find my speed around familiar trail areas is much higher, and braking is becoming more important. I think the mid and outer rings were just leaving too big a gap for me, and a 39 is the perfect ‘sweet spot’ for most of my riding, especially when you throw in a few big cogs to keep you in it longer. Even going from a 32t mid ring to a 39t big ring, I stay in the 39 about the same amount of time as the old 32.

  • ika sw dikromo says:

    Sram xo speed 10 group set is very okay

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