SRAM GX 11 Speed Rear Derailleur - 11 Speed Needs Images The PF30 uses BB30 bearings

The PF30 uses BB30 bearings preinstalled in bearing cups

Together with a light

Standard: 49mm chainline

The SH-10 is for 10 speed drivetrains and the SH-11 for 11 speed drivetrains

SRAM GX 11 Speed Rear Derailleur - 11 Speed Needs Images The PF30 uses BB30 bearingsTHE NEXT GENERATION OF SRAM Leveraging the legendary history of SRAM shifting, the GX 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. Specifications for GX 1x11 X HORIZON Rear