SRAM GX Eagle AXS 12-Speed Rear Derailleur

Item number: 81644
GX Eagle AXS 12-Speed Rear Derailleur - lunar/long
GX Eagle AXS 12-Speed Rear Derailleur - lunar/long
GX Eagle AXS 12-Speed Rear Derailleur - lunar/long
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.91 / 5.00

The GX Eagle AXS Rear Derailleur by SRAM - Top price-to-performance ratio for 12-speed electronic shifting

The SRAM GX Eagle AXS™ electronic rear derailleur for mountain bike use has a robust steel cage and shifts cleanly and directly on Eagle 12-speed cassettes. The electronic control gives your bike a clean look and the AXS app lets you optimise the shifting behaviour to your needs. Thanks to the Overload Clutch, the rear derailleur protects itself from hard impacts, so you don't have to worry when the going gets a little rough. No matter if you need the last gear on the climb or if you want to speed up before the finish line, in combination with an Eagle cassette you are equipped for every situation with the GX Eagle AXS rear derailleur. Colour-wise, it blends seamlessly into the GX Eagle colour scheme.

Information regarding the return of batteries and electrical equipment:

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

Guidelines for Replacing E-bike Components:

Before you replace components on your e-bike, please read through the guidelines for component replacement for CE-marked e-bikes/pedelecs with pedal assistance.


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

Technical Information:

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


- Eagle cassette


- derailleur pulley bearings made of steel
- colour-coordinated with Eagle components
- Overload-Clutch protection
- with battery cover as optical highlight and for protection against stone chips


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.

Roller Bearing Clutch™:
Rear derailleurs with Roller Bearing Clutch are equipped for rough and demanding terrain. Unimpressed by a ground full of roots, stones or rocks, the technology ensures a stable rear derailleur and prevents beating chains. The rear derailleur thus offers maximum drive stability without compromising on precision or performance.

Cage Lock™:
Thanks to the rear derailleur's Cage-Lock technology, the chain and the rear wheel can be fitted and removed really easily. Simply release the chain tension by pushing the shift cage forward and locking it.

Manufacturer Number:



- 1 x SRAM GX Eagle AXS rear derailleur
- 1 x SRAM chain gap adjustment gauge
- 1 x SRAM battery cover

Order Together:

- SRAM battery for eTap / AXS


  • lunar/long: 438 g


  • lunar/long, in stock

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