SRAM NX Eagle 12-Speed Rear Derailleur

Item: 50-8452
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SRAM's NX Eagle 12-speed rear derailleur can accommodate SRAM's 10-50T and 11-50T cassettes because of the larger, 14-tooth X-Sync lower pulley. It uses X-Horizon design to limit movement to the horizontal axis, easing the force required and eliminating ghost shifting. The Type-3 Roller Bearing Clutch delivers a smoother torque curve for a quieter and more consistent operation and feel. And Cage Lock makes wheel removal and chain installation a snap.


  • Cage Lock is faster and simpler
  • Roller Bearing Clutch delivers maximum drivetrain stability
  • X-Actuation keeps shifting sharp and consistent across the entire cassette
  • X-Horizon limits all movement to the horizontal axis, making ghost shifting impossible while also reducing shift force
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