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

Mfg PartNum:00.7518.139.000
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Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

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 

    Ordered by Most Relevant First
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    Reviewed 3/25/2021
    by Tom
    Overall Rating
    1 of 1 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
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