Leveraging the legendary history of SRAM shifting, the GX 2x11 rear derailleur provides incredible shifting speed and precision. X-ACTUATION technology eliminates slop and shifting variation. ROLLER BEARING CLUTCH(TM) technology delivers maximum drivetrain stability-even through the most punishing terrain. And with CAGE LOCK technology, wheel removal and installation are easier than ever. Features: GX provides the widest 2x11 gear range available. The GX 2x11 rear derailleur provides incredible shifting speed and precision