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SRAM Eagle XX1 12spd Rear Derailleur - Max 52T
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SRAM Eagle XX1 12spd Rear Derailleur - Max 52T


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Mfg PartNum: 00.7518.139.000
MSRP: $323.00
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Simple, Light, and Top-Tier Tech

Occupying a new realm in shifting performance, the redesigned SRAM XX1 Eagle™ Rear Derailleur gives no-compromise racers and dream-bike builders a true top-tier option. The crisp, precise XX1™ shifting feel athletes rely on now features an updated design that is perfect for cyclists of any experience — not just for the professionals.

The Eagle represents SRAM's newest 1x drivetrain technology. Featuring all-new 1x components, this derailleur is engineered for even greater durability and performance while maintaining a significant weight advantage over other drivetrain solutions. This technology also provides an expanded gear range of 520%, which is equal to 2x11 drivetrains. An updated cage geometry allows for improved chain management, with the roller bearing clutch eliminating excess bounce and chain slap for added comfort while on the trail. Occupying its rightful place at the top of the Eagle™ ecosystem, this one-of-a-kind derailleur makes full use of the new 10-52t cassettes and is backward compatible to also work with the 10-50t.

Incredible technology advancements allow the SRAM XX1 Eagle™ 12-speed Derailleur to have the highest level of performance and durability. Tall square SRAM X-Sync teeth edges engage the chain earlier than the traditional triangle shape, meaning traction even in the muddiest of conditions.


  • Updated cage geometry provides better chain retention and crisper shifting
  • Cage lock technology makes chain installation faster and easier
  • Roller Bearing Clutch technology eliminates derailleur bounce and chain slap
  • X-Actuation keeps shifting sharp and consistent
  • X-Horizon eliminates all movement to the horizontal axis
  • SRAM X-Sync 1x chainrings provide the highest level of performance and durability
  • Eagle technology is lighter, simpler, more durable, and an easier to use drivetrain
  • Comes in XX1 Eagle™ master colorway as part of Eagle™ Colorsystem
  • Backwards compatible, works with 10-50t and new 10-52t cassettes

  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


    Mfg PartNum: 00.7518.139.000 

    Actuation: Mechanical 

    Discipline: MTB 

    Mount Type: Standard Rear Hanger 

    Speed: 12 

    Mfg Warranty: 24 Mo. Parts

    Warranty URL: https://www.sram.com/en/service/warranty


    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Reviewed 2/24/2022
    by John
    Saint Charles
    Overall Rating
    Sram xx1 10-52 rear derailleur

    Bought because of the increase in rang on a new build and I'm running a 9-52 rear cluster.

    Was this review useful to you? Yes/No
    Thank you for your feedback.
    Reviewed 3/25/2021
    by Tom
    Overall Rating
    1 of 2 customers found this review helpful.
    Like all Sram derailleurs this is no exception

    Works well for my gravel bike

    Was this review useful to you? Yes/No
    Thank you for your feedback.
    Reviewed 2/3/2022
    by sergio
    Competitive Racer
    Overall Rating

    It is a great product of excellent quality and brand

    Was this review useful to you? Yes/No
    Thank you for your feedback.
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