Lab Tested Absolute Black Carbon-ceramic Hollow Cage Shimano Rainbow Holiday Edition [bZA2xMta]

absoluteBLACK HOLLOWcage Oversized Derailleur Pulley Cage - For Shimano 9100 / 8000 Full Ceramic Bearings Carbon Cage PVD Rainbow. The absoluteBLACKs HOLLOWcage® for Shimano 9100 and 8000 derailleurs makes the 9100 and 8000 drivetrains 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 Shimano Dura-Ace 9100 / 9150 / 9170 and Ultegra 8000 / 8050 drivetrains

Fits up to a 32t cassette

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

Upper pulley features tall teeth to provide improved shifting precision

One of the lightest oversized cages on the market (71g)

Not compatible with Ultegra Long GS cage derailleurs