2011 SRAM XO Groupset

News

XO 10 speed Cassette:

cassette

cassette_underside

Overview:
“The new PowerGlide™ 1050 cassette offers an innovative approach to 10-Speed cassette design. Our cassette performance is optimized by material choice, tooth profile and shift ramp design for quick and positive index shifting. The cassette shifts efficiently and positively in all high performance situations. Our new cassette features a semi-spidered construction for a maximum stiffness to weight ratio and is available in many optimized configurations to best match a wide variety of uses.”

Specifications:
Technology Power Glide
Weight 299 grams (11-32T)
Gear Ratios 11-32, 11-28, 11-26, 11-23, 12-36T
Speeds 10
Recommended Chain PC-1090R, PC-1090, PC-1070, PC-1050, PC-1030
Lock Ring Material Steel / Pad printed finish
Sprocket Material Heat treated steel / Blast Silver

XO Cranks cutaways:

Showing the blending of carbon and aluminum.

cutaways_2

cutaways

Overview:
* All new light weight carbon crank that is strong enough to handle the epic all mountain adventure
* X-Glide 2X10 and 3X10 shifting technology, 26-39, 28-42 and 22-33-44 gearing
* CNC machined 7mm AL rings
* New GXP Bottom Bracket System featuring Gutter Seal Technology
* Available in the following bottom bracket configurations: PF30, BB30, GXP and GXP PF
* 4 graphic colors: Red, Black, Gold and Blue

Specifications:
Arm Material Carbon Molded
Weight 788 Grams (GXP w/BB)
Bolts Alloy Double Hex Type/Stainless Steel
Recommended Chain 10 Speed
Material Carbon Fiber Arms w / Forged Alloy Spine

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 has been the Site Manager of Mtbr.com for over 12 years and 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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Wordpress Comments:

  • 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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