SRAM SX Eagle 12 Speed Rear Derailleur | The Bike Affair
SRAM SX Eagle 12 Speed Rear Derailleur | The Bike Affair

SRAM SX Eagle 12 Speed Rear Derailleur


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SRAM SX Eagle 12 Speed Rear Derailleur

Enter the Eagle Ecosystem: Embark on a journey into the expansive SRAM Eagle ecosystem with the new SX Eagle 12 Speed Rear Derailleur. It's your gateway to enhanced performance, offering compatibility with a wide gear range including both 11-50T and 10-50T cassettes.

Proven Design, Unmatched Compatibility: Featuring the acclaimed SRAM 1x-specific X-HORIZONâ„¢ design, this rear derailleur ensures smooth, precise, and consistent shifting across your entire gear range. Its design is a testament to SRAM's commitment to reliability and performance.

Eagle Ecosystem Compatibility: The SX Eagle rear derailleur is designed for seamless integration within the Eagle ecosystem. This cross-compatibility offers you the flexibility to upgrade components easily, ensuring your ride evolves with your needs.

Upgrade Ready: The SX Eagle is not just an entry point; it's a promise of future possibilities. Its compatibility with other Eagle components means you can upgrade your setup piece by piece, tailoring your bike to your exact riding style and requirements.

For riders taking their first steps into the world of high-performance 12-speed drivetrains, the SX Eagle rear derailleur offers an affordable yet reliable option. It provides the perfect blend of performance, compatibility, and the potential for future upgrades, making it an ideal choice for aspiring champions and trail enthusiasts alike. Embrace the Eagle ecosystem and unlock new levels of riding performance.


Features of SRAM SX Eagle 12 Speed Rear Derailleur

  • A full featured Eagle derailleur, compatible with the Eagle Colorsystem.
  • X-SYNCâ„¢ pulley technology provides greater efficiency, crisper shifting, and quieter operation.
  • Cage Lock offers discovery-level riders easy wheel removal.

Specifications of SRAM SX Eagle 12 Speed Rear Derailleur

Model ID  RD-SX-1-B1
Cage (RD) Long
Cable Pull Ratio X-Actuation
Speed (RD) 12 Speed
Color (RD) Black
Cage Material (RD) Steel
Pulley Bearings Material Steel
Max Tooth 50

Technologies of SRAM SX Eagle 12 Speed Rear Derailleur

Cage Lockâ„¢:

With Cage Lock™ technology in the rear derailleur, wheel removal and installation—as well as chain installation—becomes faster and simpler. Just push the cage forward to create slack and lock it into place.


Developed specifically for SRAM 1xâ„¢, X-Actuationâ„¢ keeps shifting sharp and consistent across the entire cassette.


The X-Horizon™ rear derailleur’s ‘straight parallelogram’ design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force. For quicker, more exact shifting, the large upper pulley offset design maintains a constant chain gap across all gears.

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