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SRAM X01 Eagle 12-Speed GXP Direct Mount Crankset - Boost

SRAM X01 Eagle 12-Speed GXP Direct Mount Crankset - Boost

Item # SRM00A1

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  • Red, 170mm/32t ($402.00)
  • Red, 175mm/32t ($402.00)
  • Black, 170mm/32t ($402.00)
  • Black, 175mm/32t ($402.00)
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Item # SRM00A1


Ready to soar.

Recent years have seen the rise of one-by drivetrains bringing the simplicity of a single front chainring to the trail while still allowing some gear changes when things get lumpy. SRAM's new Eagle drivetrain pushes the one-by envelope further with 12 cassette cogs for an even bigger reason to ditch the front derailleur and hop on the one-by train. The SRAM X01 Eagle 12-Speed GXP Direct Mount Boost Crankset puffs the chainline out three millimeters to pair with your Boost-equipped frameset and features an updated tooth shape for confident chain control and efficient power transfer.

Eagle's X-Sync 2 chainring builds on the OG X-Sync chainring's chain retention ability with a few updates coming with claims of even better chain control. As with the original design, each tooth is CNC-machined with a variable thickness from tooth to tooth, which support the chain's inner- and outer-link widths. This lets the chain and chainring essentially lock together as you pedal and pushes away mud with ease. Where the original X-Sync teeth boasted a boxy shape, Eagle's chainring features aggressively profiled teeth that hold the chain like a hungry cyclist fighting for the last piece of pizza before letting it glide back to the cassette for smooth, snag-free spinning.

SRAM utilizes its Carbon Tuned technology to fashion the X01 Eagle arms with a proprietary carbon layup that increases stiffness where it's needed and minimizes excess material for an overall reduction in weight. In contrast to its top-tier XX1 Eagle cousin's hollow core construction, the X01 Eagle crank arms feature a foam core that adds a handful of grams while keeping costs down without impacting responsiveness. The direct-mount chainring interface also affords the option of quickly subbing different sized rings for different shapes of terrain, allowing flexibility to adapt to the day's planned route.

  • SRAM reimagines one-by with its groundbreaking 12-speed crankset
  • Stiff carbon crank arms efficiently transfer power
  • Updated tooth shape locks the chain in line
  • Foam core construction reduces weight with a budget in mind
  • Easily customize gearing with centerlock chainring

Tech Specs

Arm Material:
carbon fiber with foam core
Arm Length:
170 mm, 175 mm
Chainring Sizes:
32 t
BB Type:
Compatible Components:
SRAM X01 Eagle, SRAM XX1 Eagle
Recommended Use:
mountain bike
Manufacturer Warranty:
2 years

Reviews & Community


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Solid Crank

  • Familiarity: I've put it through the wringer

I've had the XO1 group set on an SB6 and now on an SB5.5 and love the group set.

This is a super nice crankset that doesn't weigh much and can take a beating.

Pretty Perfect

  • Familiarity: I've used it several times

These are a pretty perfect crank as far as weight to strength ration, overall design, and ease of setup. Only drawback is the insane cost... remember when a whole bike would cost this much? But... the price is competitive wit the market so what can you do. Only ridden this exact set a few rides so far, but my X01 11 speed carbon cranks lasted a long time and were still silent and smooth when I sold that bike, so I'm expecting good things from these as well.

Stiff light and sexy!!!!

    SRAM has got it figured out. This thing is dialed! The entire Eagle system is a huge game changer. I can't wait to get out on my bike more.

    If you have any questions about the SRAM Eagle Group or any other gear shoot me an email at or give me a call at 801-523-4053

    So far so good

    • Familiarity: I've used it several times

    Cranks seem to be stiff enough for my liking and come with crank boots which was nice to see. Very quiet drive train as well.