absoluteBLACK HOLLOWcage Oversized Derailleur Pulley Cage - Shimano Dura-Ace 9250

• Features a carbon-polymer mono-plate construction with bespoke, oversize, full ceramic bearings and an advanced silencing pulley
• Uses full ceramic bearings made with silicon nitride ceramic balls and zirconia oxide ceramic races that make the guide pulleys incredibly stiff for greater shifting precision
• Silent Xring pulley damps the chain impact on the guide pulley teeth, eliminating the engagement noise
• Carbon-polymer mono-plate construction makes this a very lightweight oversize cage at only 71 g
• 34 teeth
• 5 C7 dB noise reduction versus stock pulleys
• In the box: complete cage, lockring tool and 2 spare Xring rubbers

Imported.