The SRAM GX Eagle B2 12-Speed Rear Derailleur is built to deliver smooth, reliable shifting for aggressive mountain biking. Featuring an updated cage architecture, proven X-HORIZON™ technology, and compatibility with both 10-50T and 10-52T Eagle cassettes, it offers exceptional drivetrain performance and chain control.

Key Features:
  • Compatible with SRAM Eagle 12-speed drivetrains using both 10-50T and 10-52T cassettes.
  • Redesigned cage architecture improves chain management for smoother, more stable drivetrain performance.
  • X-HORIZON™ design minimizes unwanted derailleur movement to deliver precise and consistent shifting.
  • 14-tooth X-SYNC™ lower pulley enhances chain engagement and shifting efficiency across the cassette.
  • Type 3 Roller Bearing Clutch reduces chain slap while improving chain retention and drivetrain stability.
  • Cage Lock technology simplifies rear wheel removal and chain installation for easier maintenance.
  • Durable aluminum construction provides an excellent balance of strength, low weight, and long-term reliability.
  • Compatible with the SRAM Eagle Colorsystem for a coordinated drivetrain appearance.

Who is it for?
Ideal for trail, enduro, and all-mountain riders using a SRAM Eagle 12-speed drivetrain who want precise shifting, excellent chain control, and compatibility with both 10-50T and 10-52T cassettes.
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