absoluteBLACK HOLLOWcage Oversized Derailleur Pulley Cage - For Shimano 9100 / 8000, Full Ceramic Bearings, Carbon Cage,

  The absoluteBLACK's HOLLOWcage Oversized Derailleur Pulley Cage for Shimano 9100 / 8000 features a revolutionary mono-plate design to provide quiet and precise shifting. Designed for use with Shimano Dura Ace 9100 / 9150 / 9170 , and Ultegra 8000 / 8050 Fits up to a 32T cassette The Silent Xring Pulley dampens the chain impact on the guide pulley teeth, eliminating the engagement noise Flexible cage design aligns better with the angle of the chain when using the higher gears of the cassette HOLLOWcage uses abnormally large, bespoke, full ceramic bearings that make the pulleys incredibly stiff for greater shifting precision Upper pulley features tall teeth to provide improved shifting precision Defined Color Black Drivetrain Speeds 11 Fits Brand Shimano Fits Model Dura-Ace 9100 Fits Model Dura Ace 9150 Fits Model Dura Ace 9170 Fits Model Ultegra 8000 Fits Model Ultegra 8050 Largest Cog 32 MPN TCRCAGEDA91/BK-BK UPC 5110846005062