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SRAM GX 1×11 Speed Rear Derailleur

SRAM GX 1×11 Speed Rear Derailleur


A model that borrows technologies from SRAM’s top-end mechanisms, the SRAM GX 1×11 Speed Rear Derailleur (Type 2.1) shifts smoothly and reliably as you’re attacking your local mountain bike (MTB) trails. It also provides excellent chain retention.

2 in stock


Enhanced with X-Horizon shifting technology, the SRAM GX 11 speed rear derailleur eliminates ghost shifting and reduces shift force and chain slap. It also features the Cage Lock features, which locks the derailleur out of the way when removing and installing wheels to the process much easier.


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

Roller Bearing Clutch: Roller Bearing Clutch (RBC) rear derailleurs deliver maximum drivetrain stability—even through the most punishing terrain. With RBC technology, derailleur bounce and chain slap are eliminated without sacrificing precision.

X-Actuation: Developed specifically for SRAM 1X, X-Actuation keeps shifting sharp and consistent across the entire 10 to 42-tooth cassette.

X-Horizon: 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.

X-Sync: SRAM X-Sync 1X chainrings provide the highest level of performance and durability. The SRAM X-Sync tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-Sync chain rings have been designed with mud-clearing recesses for the inner chain links and rollers. Engineered in Germany, X-Sync rings are an integral part of the SRAM 1X drivetrain.


  • Compatibility: SRAM 1×11 mountain bike (MTB) drivetrains, 11-Speed SRAM MTB shifters
  • Maximum Tooth Low Sprocket: 42T
  • Mount Type: Standard hanger mount
  • Pulleys: X-Sync, Large upper pulley offset automatically adjusts chain gap
  • Cable Pull: X-Actuation
  • X-Horizon design reduces shift force and ghost shifting
  • Type 2.1 technologies: Roller Bearing Clutch and Cage Lock 12-tooth X-SYNC pulley wheels; Clutch Type Derailleur: Yes
  • Weight: 265g



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