The redesigned SRAM XX1 Eagle 12-speed 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 cage geometry for improved chain management. Occupying its rightful place at the top of the Eagle ecosystem, the XX1 Eagle rear derailleur makes full use of the new 10-52t cassettes and is backwards compatible to work with 10-50t cassettes.
- Model No: XX1 Eagle Rear Derailleur
- Series: XX1 Eagle
- Speeds: 12
- Max Cassette Teeth: 52
- Cable Pull Ratio: X-actuation
- Color: Lunar
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.
All returns must be requested within sixty (60) days of the fulfillment date (i.e. the date we printed the shipping label and boxed up your order.) All returned items must be received in new and unused condition, with the original tags and labels attached, and in the original packaging. We cannot accept returns on any items that have been installed or show wear of any kind.
To request a return, please visit: returns.thundermountainbikes.com and follow the steps to return eligible items from your order.
After receiving your return and inspecting the condition of your item, we will process your return. Please allow at least seven (7) days from the receipt of your item to process your return or exchange. We will notify you by email when your return has been processed.
For all Special Order items, there is a 25% restocking fee. Special Order items are those that we do not currently stock.
For defective, damaged, 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:
Very knowledgeable and helpful and fast delivery!! Will use them again
XX1 Eagle Rear Derailleur