SRAM GX X-Horizon 1x11 Rear Derailleur
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SRAM GX X-Horizon 1x11 Rear Derailleur

Product Code 20138103
Other products by SRAM


    NOTE: Price applies to Online sales only, pricing may differ in our Retail store.
  • In-store: Expect delivery in 2-3 days.
  • Available to Order: With our Supplier, expect delivery in 4-7 days.
  • This item comes with free shipping.


Leveraging the legendary history of SRAM shifting, the GX 1x11 rear derailleur provides incredible shifting speed and precision. X-ACTUATION™ technology eliminates slop and shifting variation. ROLLER BEARING CLUTCH™ technology delivers maximum drivetrain stability—even through the most punishing terrain. And with CAGE LOCK™ technology, wheel removal and installation are easier than ever.

  • X-HORIZON™ design reduces shift force, ghost shifting and chain slap
  • 12-tooth X-SYNC™ pulley wheels
  • Large upper pulley offset automatically adjusts chain gap
  • Sealed cartridge bearings
  • Aluminum Cage



Speeds 11-speed
Material Aluminum Cage
Weight 265g
Colors Red, Black
Compatibility 1x11 X-ACTUATION™
Bearings Sealed cartridge bearings
Cage Sizes Long
Pivot Design Horizontal Parellelogram design
Max Tooth 42t

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