XX Eagle Transmission AXS Rear Derailleur

XX Eagle Transmission AXS Rear Derailleur

SKU: 00.7518.161.000

Regular price$650.00
Rear Speeds
  • In stock, ready to ship
  • Inventory on the way
  • Free shipping on all orders $49+

Get ready for a foundational change in the relationship between cassette and derailleur with the XX Eagle Transmission derailleur. As an integrated, interdependent component of the transmission system, this derailleur mounts around the wheel axle itself, creating a direct and strong connection to the cassette through a first-of-its-kind Hangerless Interface. The Full Mount attachment method enhances the connection further, providing a secure grip on both sides of the frame.

Setting up the XX Eagle Transmission derailleur is a breeze thanks to the same intuitive pairing and set-up procedure as the Eagle AXS derailleurs. It also features a tucked-in profile with replaceable skid plates to enhance dependability, particularly in high-pressure racing environments. The lower pulley called Magic Wheel ensures uninterrupted spinning even if an object becomes lodged.

This derailleur boasts an overload clutch and accommodates common maintenance to provide features that real-world riders appreciate. With unparalleled shifting performance and unprecedented strength, the XX Eagle Transmission derailleur delivers unrivaled performance for the most demanding riders. 

  • Hangerless Interface, full mount attachment method
  • More strength, reliability, and unrivaled performance. Install and pair via the reliable and familiar standard AXS set-up and pairing procedure
  • Chain management features
  • Magic Wheel
  • Overload Clutch
  • Replaceable skid plates 


Model: RD-XX-E-B1
Max Cassette Teeth: 52t
Material: Aluminum
Weight: 465 grams

AXS Battery and Charger are not included 

SRAM Eagle Transmission AXS Compatibility:

The SRAM XX Eagle Transmission AXS Rear Derailleur is compatible with the following:

Frameset: Any frame that fulfills the “UDH Specification” featuring a hanger-less interface can be upgraded. The SRAM UDH Bike Finder lists all UDH bikes that are compatible with Eagle Transmission.
Battery: SRAM AXS Battery
Bottom Bracket: SRAM DUB "Wide": BSA73PF89.5PF92PF30 MTB73BB30
Chain: XX SL, XX, or X0 Eagle Transmission chains
Chainring: XX SLXX, or X0 Eagle Transmission chainring
Cassette: XX SL, XX, or X0 Eagle Transmission cassette
Controller: AXS POD Controller, AXS Pod Ultimate Controller
Crankset: XX SL, XX, or X0 Eagle Transmission cranksets
Freehub: SRAM XD compatible freehubs
PowerLock: Eagle Transmission PowerLocks only
Rear Derailleur:  XX SL, XX, or X0 Eagle Transmission rear derailleur

SRAM Eagle Transmission is not compatible with previous-generation Eagle components. However, Eagle Transmission T-Type chainrings are backward compatible with Eagle chains, so they can be used on the current Eagle drivetrains. Non-T-Type Eagle chainrings will not work with Eagle Transmission chains.

Please reach out to us with any questions you may have on anything we sell. We want to make sure you get the right part the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!


We currently offer both economy and expedited shipping options though FedEX and USPS. 

Orders totaling over $49 are eligible to ship for free via an economy ground option of our choice. 

If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee and depending on your location. 


Should there be an issue with the item you bought, or you no longer need your purchase, we will be happy to set up a return.

Returns or exchange requests for New or Used Bikes must be requested by emailing us at sedona@thundermountainbikes.com within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes have a $200 restocking fee and the customer pays for return shipping.

Returns for most other items may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items installed or show wear of any kind. 

Clearance and open-box items may not be returned. 


To request a return, please log in to your customer account by clicking the  customer account icon  Profile icon in the top right of any page or visit account.thundermountainbikes.com

1. In the Email field, enter your email address and click Continue.

2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.

3. Go back to the online store and enter a six-digit verification code to log in.

4. Find and click on the order that you want to submit a return for.

5. If your order has more than one item, select only the items you want to return.

6. Select a return reason and add a note for the store if needed.

7. Click Request Return.

Once your return request is approved, you will receive an email with shipping instructions and a return shipping label. 


We will process your return after we receive your returned item(s) and inspect the condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed.


If you receive defective or damaged products or if we sent you the wrong products, please contact us using the phone number or email below.


If you have any questions concerning our return policy, please contact us at:

(928) 282-1106   |   sedona@thundermountainbikes.com

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