XX SL Eagle Transmission AXS Rear Derailleur

XX SL Eagle Transmission AXS Rear Derailleur

SKU: 00.7518.160.000

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

The XX Eagle Transmission Derailleur is a revolutionary component that transforms the way the cassette and derailleur interact. By designing them as an interconnected transmission, the T-Type derailleur mounts directly onto the wheel axle, creating a groundbreaking connection to the cassette. This Full Mount attachment method is a game-changer, offering a more secure connection that grips both sides of the frame and offers unparalleled efficiency.

The intuitive pairing and set-up procedure for the new transmission derailleurs is the same as for the Eagle AXS derailleurs, ensuring ease of use. The derailleur's sleek profile and overload clutch allow for optimal performance, while its Magic Wheel lower pulley keeps spinning even if debris gets lodged.

The XX SL Eagle Transmission derailleur also boasts a carbon cage, replaceable outer link, and b-knuckle cover in a sophisticated black colorway. Offering unrivaled shifting performance, exceptional strength, and minimal weight, it truly shifts the bar higher for competitive racing.

  • Hangerless interface, full mount attachment method
  • Super strong, super light, unrivaled shifting performance. Install and pair via the reliable and familiar standard AXS set-up and pairing procedure
  • Chain management features
  • Magic Wheel
  • Overload Clutch
  • Pared to its purest form for the lightest Transmission derailleur


Model: RD-XX-SLE-B1
Max Cassette Teeth: 52t
Material: Aluminum, Carbon
Weight: 440 grams

AXS Battery and Charger are not included

SRAM Eagle Transmission AXS Compatibility:

The SRAM XX SL 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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