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Sram SX Eagle Rear Derailleur | 12 Speed | Black

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Article number: RD-SX-1-B1
SKU: 00.7518.155.000

This new SX Eagle derailleur is your entry point to the SRAM Eagle Ecosystem.


Sharing many features with the rest of the Eagle Ecosystem like the proven SRAM 1x-specific X-HORIZON™ body design, it can accommodate both 11-50T and 10-50T cassettes. The SX Eagle is cross-compatible with much of the Eagle Ecosystem, making it easy to personalize and upgrade your ride when you are ready.


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


  • 12 Speed 1BY MTB
  • 1x specific X-Horizon design that allows for a straight horizontal derailleur path through shifting
  • Eagle X-Sync pulley technology provides efficiency, crisper shifting, and quiet operation
  • Cage Lock feature allows for easy rear wheel and chain maintenance
  • Cage (RD): Long
  • Max Tooth: 50T
  • Cage Material (RD): Steel
  • Pulley Bearings Material: Steel
  • Color: Black
  • Model codes: 00.7518.155.000 / RD-SX-1-B1

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