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SRAM XG-1295 X01 Eagle 12-Speed Cassette


Item # SRM009W

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  • Black, 10-50t ($360.00)
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Item # SRM009W

Gift of the gods.

The launch of SRAM's 12-speed one-by Eagle X01 and XX1 drivetrains marks an evolutionary step in the company's determined march towards rendering the front derailleur a meaningless relic of the past. While the entire group merits close attention, the breakout star is unquestionably the 12-cog cassette. The SRAM XG-1295 X01 Eagle 12-Speed Cassette may not feature the bright, golden, Ti-Nitride-coated bling of its more expensive XX1 counterpart, but it boasts all the engineering ingenuity that brings 12-speeds roaring into the scene at a price that won't take quite as massive a bite out of your wallet. The XG-1295 boasts a 500% usable gear range. That eclipses the usual one-by gearing (11-speed, 10-42t cassettes with a 420% range) and rivals the average of 515% found in most doubles.

The Eagle 12-Speed Cassette encompasses that popular 10-42t 11-speed cassette and adds a 50t bailout gear for those lung-bursting climbs that leave you gasping for air and pleading for the cycling deities to materialize amidst the switchbacks with an extra climbing gear. In short, Eagle gives you a one-by system with all the gear range you need to master leg-crushing ascents and heart-dropping descents without the finicky weight of a front derailleur or extra chainring.

SRAM incorporates its X-Dome architecture, whose high strength-to-weight ratio keeps things as efficient as possible while its open design shoos away mud for confident, consistent shifts in variable conditions. This makes the Eagle 12-Speed Cassette an ideal choice for racers bent on shaving grams without sacrificing durability, along with claims of an even smoother, quieter shifting experience than ever before.

As much as SRAM is reinventing the proverbial wheel with a 12-speed cassette, the company is sensitive to the potential uproar that would greet yet another new hub standard. The Eagle 12-Speed Cassette is compatible with SRAM's current XD Driver body, making for an easy transition from 11 to 12 speeds. That said, upgrading to Eagle does require a full drivetrain swap, meaning you'll need an Eagle chain, crankset, chainring, shifter, and rear derailleur to make use of that 12-speed awesomeness.

  • SRAM redefines 1x drivetrain functionality with a 12-speed cassette
  • 500% usable gear range is similar to double drivetrain ranges
  • X-Dome architecture yields incredible strength-to-weight ratio
  • Precision engineered for exceptional longevity
  • Compatible with SRAM's 11-speed XD Driver body
  • Works exclusively with SRAM Eagle drivetrain components

Tech Specs

Cog Sizes:
10 - 50 t
Cog Material:
[10-42t cluster] chromoly, [50t cog] aluminum
Hub Type:
Claimed Weight:
355 g
Recommended Use:
mountain bike
Manufacturer Warranty:
2 years

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do you need a special kind of hub to install twelve speed cassette? I currently have a 10 speed and I'm not sure if I need to buy a new hub.

Hey Jimmy! You'll need a XD Driver freehub to install the 12sp cassette. You'll have a splined freehub body that both Sram & Shimano 10sp cassettes use, feel free to reach out to me at or 801.204.4547 and I can help get you an XD Driver if you're interested in going to a 12sp drivetrain. Cheers, Connor

Re: sram 12-speed cassette--you write FIVE PARAGRAPHS of AD copy but don't even mention the detail everyone wants to know: WHAT ARE THE COG-SIZES. This earns you the chump of the month award

Hey Eric, The sizes are - 10, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 50