absoluteBLACK HOLLOWcage Oversized Derailleur Pulley Cage - For SRAM AXS Full Ceramic Bearings Carbon Cage Titanium. The absoluteBLACKs HOLLOWcage® for SRAM eTap AXS RED and Force 12-speed derailleurs makes the AXS drivetrain whisper quiet. It features a carbon-polymer mono-plate construction with bespoke oversized full ceramic bearings and one of the most advanced silencing pulleys ever made.

Designed for use with SRAM RED and Force AXS drivetrains

The Silent Xring Pulley dampens the chain impact on the guide pulley teeth eliminating the engagement noise

Incredibly silent (over 12dB noise reduction vs stock)

HOLLOWcage uses full ceramic bearings (Silicon Nitride ceramic balls and Zirconia Oxide ceramic races) that make the guide pulleys incredibly stiff for greater shifting precision

One of the lightest oversized cages on the market (69g)

Works with 10-28t 10-33t and 10-36t cassettes

Not compatible with SRAM XPLR or 11-speed RED/Force

ONLY works with AXS flat top chain