SRAM X01 Eagle AXS 12-Speed Rear Derailleur

Item number: 78159
X01 Eagle AXS 12-Speed Rear Derailleur - lunar/long
X01 Eagle AXS 12-Speed Rear Derailleur - red/long
X01 Eagle AXS 12-Speed Rear Derailleur - red/long
X01 Eagle AXS 12-Speed Rear Derailleur - red/long
X01 Eagle AXS 12-Speed Rear Derailleur - red/long
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.91 / 5.00

The X01 Eagle AXS 12-speed rear derailleur by SRAM - direct electronic shifting on the Enduro bike

The electronic SRAM X01 Eagle AXS™ rear derailleur very precisely shifts Eagle 12-speed cassette with 10-50 or 10-52 teeth, even in Enduro use. Save youself the hassle of wiring of your rear derailleur and take advantage of the electronic AXS platform. The adjustment is done in no time and with the AXS, you have the option to personalise the shifting behaviour. The cage is 10 mm shorter, sits further forward and further on the inside than the mechanical rearderailleur, giving you more ground clearance and making the rear derailleur nestle even closer to the cassette. It can take a lot: With Overload Clutch, it protects itself against hard blows. It is also completely water and dust proof, so you don't have to worry about its functionality when you're crossing rivers, muddy trails or even when using high-pressure cleaners.

Information regarding the return of batteries and electrical equipment:

Information on the return and disposal of batteries and electrical equipment can be found here.


Series: X01 Eagle AXS
Application: All Mountain, Enduro
Gearing: 12-speed
Mount: standard
Cassette Teeth (max.): 52-tooth
Compatibility: SRAM MTB 12-speed

Technical Information:

Derailleur Pulleys: 14-tooth
Outer Cage Material: Aluminium
Inner Cage Material: Aluminium
Other Materials: steel, stainless steel


- Eagle cassette XG-1295 with 10-50 teeth
- Eagle cassette XG-1295 with 10-52 teeth
- Eagle cassette XG-1299 with 10-50 teeth
- Eagle cassette XG-1299 with 10-52 teeth


- cage made of forged aluminium
- derailleur pulley bearings made of steel
- stainless steel hardware
- colour-coordinated with Eagle components
- large ground clearance
- water- and dustproof according to IP69K
- Overload-Clutch protection


AXS is SRAM's electronic integration platform that combines electronic bicycle components and software. The SRAM AXS app allows you to view battery status, change component behaviour, adjust controls, receive maintenance reminders and update firmware.

Overload Clutch:
In case of an impact against the rear derailleur, the motor decouples to give the rear derailleur a maximum of movement and returns to its original position after the impact.

Developed specifically for 1x drivetrains, X-Actuation keeps shifting sharp and consistent across the entire cassette.

Colour Index:

lunar: dark grey

Manufacturer Numbers:

lunar: 00.7518.126.001
red: 00.7518.126.002


- 1 x SRAM X01 Eagle AXS DUB 12-speed rear derailleur
- 1 x SRAM chain gap adjustment gauge

Order Together:

- SRAM battery for eTap / AXS


  • lunar/long, in stock
  • red/long, in stock

Customer Reviews (3)


Customer Reviews (3)


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by Denis B.  on 21.04.2022
verified purchase

Le top envoie rapide France derailleur super

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by Florian W.  on 14.12.2020
verified purchase

Einfach nur geil... Schaltet knackig, mega-präzise und butterweich. Das wirkt sich definitiv positiv auf Ketten- und Kassettenverschleiß aus. Wichtig: Der Käfig der X01 AXS-Version ist ~1cm kürzer als die Schaltzugvariante der X01. Ich musste 2 Glieder rausnehmen, damit die Kette sauber läuft und nicht quer liegt.

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by irnu suryohadi k.  on 02.10.2020

Perfekten Kundenservice !! Und perfekten Schaltwerk !!

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