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SRAM XX1 BB30 156 Q-Factor Crankset

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Item # SRM0458

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Item # SRM0458

Description

The next level of single ring riding

SRAM's pursuit of seamless and simple component integration shows it continually innovating the component industry -- case in point being the XX1 group. As a whole, XX1 works as an efficient machine, but individually, each component plays a vital role in making this group the trendsetter that it is. The XX1 BB30 Crankset sets itself apart from others with its game-changing design and the Zen-like simplicity that comes from running a single chainring. The functionality, Q-factor, and compatibility offered by XX1 make it the standout component in the new SRAM arsenal.

Carbon arms have been mated to a redesigned aluminum spider for a lightweight crank arm that doesn't require a finessing of parts to make an optimal single-ring setup. The X-SYNC chainring is designed for maximum chain control, with each tooth being CNC-machined to support the chain's inner and outer links. The machining process provides a variable thickness from tooth-to-tooth, so the chain and chainring essentially lock together as you pedal. However, the locking of the two doesn't inhibit pedal efficiency, and it eliminates the commonplace ailments associated with running a single ring upfront. What we love most is the liberation from chain guides in order to keep the chain in place on rugged, chain-slapping trails. SRAM even goes as far as to say that you have a better chance of dropping your chain with a front derailleur than you do with the XX1 crank and chain combo.

The new chainring's 76 bolt circle diameter sets it apart from others in the SRAM catalog. This diameter emanated from a functionality standpoint, not as an afterthought of the new, universal spider shape. Its design makes it simple to remove the chainring for maintenance or ratio changes. Gone are the days of finagling the chainring off the spider -- just unscrew the bolts, move the chainring off, and have the replacement on in minutes. Even better, SRAM has created six different chainring sizes that are compatible with the XX1 spider. Now, you can dial-in your range to match the trail, beforehand or on-the-fly.

And though the XX1 crank is designed to work optimally in tandem with the XX1 group, you can use the crank and a 10 speed chain to enjoy the benefits of running a single-speed or one-by-10 setup.

This BB30 specific crank has a 156 Q-factor to accommodate those who prefer a narrower tread. The SRAM XX1 BB30 Crankset comes with Black crank arms, a Silver spider, and a Silver chainring. It's available in 170 and 175mm crank arm lengths.

Tech Specs

Arm Material:
carbon fiber
Arm Length:
170 mm, 175 mm
Bolt Circle Diameter:
76 mm
Bottom Bracket:
BB30
BB Type:
BB30
BB Threading:
English
Bolts:
aluminum alloy rocker
Rings:
1
Spindle:
aluminum
Compatible Components:
SRAM XX1 group
Claimed Weight:
650 g
Recommended Use:
mountain biking
Manufacturer Warranty:
2 years

Reviews & Community

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SRAM XX1 BB30 156 Q-Factor Crankset

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Here's what others have to say...

Hi
I have 2010 Specialized epic 29er...

Hi
I have 2010 Specialized epic 29er carbon.
Does this will fit to my bike? size M

Best Answer Responded on

I believe your bike is a standard threaded BB which means this BB30 crank will not fit into it. You need to look at part #SRM0544. This should fit your frame you will need to get a SRAM GXP Bottom bracket as well. I hope this helps and if you need any more help with questions please contact me directly at ececala@backcountry.com

Regards,
Enrico

Will this fit on the Yeti SB-66? And which...

Will this fit on the Yeti SB-66? And which BB fits as well. Bike frame is 2013 Size M

Best Answer Responded on

Hi there:

It looks like for a Yeti SB 66 2013 you would want a GXP 168 compatible crank/bottom bracket. We do have a SRAM XX1 GXP crankset 168 on our site. If you have any more questions in regards to this or anything else I can help you out with please feel free to contact me directly at slukas@backcountry.com

-Sarah

Does this come with a bottom bracket

Does this come with a bottom bracket

Responded on

Hi Bill-

The SRAM XX1 BB30 Crankset comes with Black crank arms, a Silver spider, and a Silver chainring. If you are interested in the crankset with a specific bottom bracket, feel free to email me directly at slukas@backcountry.com and I can get you set up with what suits you best.

-Sarah

5 5

SRAM xx1

  • Gender: Male
  • Familiarity: I've put it through the wringer

Get the whole Groupo if you like light weight, superb shifting and very little if ever chain drops . The deep tooth desighn on the chain wheels keep the chain on through the rough and the horizon deraileur helps that much more. 11 speed is enough for the steep climbs and fast descents. I have this Groupo on my light weight carbon 29er XC bike but I want it on every horse in the stable!

SRAM xx1