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Shimano Rear DERAILLEUR, RD-R8000, ULTEGRA, GS 11-Speed, Shadow Design, Direct Attachment, W/OT-RS900(Black) : Sports & Outdoors - Amazon.com
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Ultegra R8000 Rear Derailleur Barrel Adjuster Doesn't Work, and Housing Seems Too Short? (details in comments) : r/bikewrench
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Shimano Ultegra RD-RX800 Rear Derailleur (Black) (11 Speed) (Medium Cage) (GS) - Performance Bicycle
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SHIMANO ULTEGRA -Road Bike Bicycle RD-R8000-SS GS Rear Derailleur -Short Cage Medium Cage- SHIMANO SHADOW RD 11-speed - AliExpress
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Amazon.com : Shimano Rear DERAILLEUR, RD-R8000, ULTEGRA, GS 11-Speed, Shadow Design, Direct Attachment, W/OT-RS900(Black) : Sports & Outdoors
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