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Amazon.com : Bibike Oversized Derailleur Pulley Wheel System Carbon Fiber Cage Ceramic Bearing Aluminum Pulley for Shimano 5800 5700 4700 4600 : Sports & Outdoors
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Kogel Kolossos Derailleur Pulley Wheel Ospw Oversized Ceramic Bearing 82g For R9100/9150 And R8000 Ss/r8050 Ss/11 Speed - Bicycle Derailleur - AliExpress
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