HOLLOWcage® for Shimano 9100 / 8000. The revolutionary mono-plate design is the quietest, best shifting, aerodynamic derailleur cage design created to date. It is a dawn of new era for rear derailleurs. HOLLOWcage ® has a carbon-polymer mono-plate construction with bespoke, oversized, full ceramic bearings and the most advanced silencing pulleys ever created.
Key Highlights Are It is super silent (over 12dB noise reduction vs stock) The shifting is as good as with the original Dura Ace cage It’s more aero than the OEM cage and other oversized cages It saves more watts than other cages One of the lightest oversized cages on the market First mono plate construction of its kind
Weight: 71G
Colour: Black
Compatibility: Shimano Dura Ace 9100 / 9150 , Ultegra 8000 / 8050. Fits up to 32T cassette
In the box: Complete cage, lockring tool, 2x spare xring rubbers
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