CyclingCeramic Narrow 14T Pulley Wheels for Shimano Dura-Ace R9100/Ultegra R8000/Ultegra RX/GRX/XT/XTR 11S Derailleur Gold | Alltricks.com
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Amazon.com : Shimano Ultegra 6800 11-Speed Rear Derailleur Pulley Set: Version 2 : Sports & Outdoors
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Amazon.com : SwishTi Titanium Road Cyclocross Gravel Bicycle Bike Rear Derailleur Oversized Pulley Wheel System Cage OSPW for Shimano Ultegra r8000 r8050 / Dura Ace r9100 r9150 11s use (Red) : Sports
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shimano ultegra R8000 rear derailleur upgrade - ceramic bearing pulley wheels for road bike folding - YouTube
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KCNC Road Bicycle New Bike Oversized Pulley Cage For ShiMano Ultegra R8000 R8050 / Dura Ace R9100 R9150 11s Rear Derailleur - AliExpress
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