![mountain bike - How can you identify if a Shimano rear derailleur is medium or long cage? - Bicycles Stack Exchange mountain bike - How can you identify if a Shimano rear derailleur is medium or long cage? - Bicycles Stack Exchange](https://i.stack.imgur.com/9nh4t.jpg)
mountain bike - How can you identify if a Shimano rear derailleur is medium or long cage? - Bicycles Stack Exchange
![Amazon.com : Shimano Rear DERAILLEUR, RD-R8000, ULTEGRA, GS 11-Speed, Shadow Design, Direct Attachment, W/OT-RS900(Black) : Sports & Outdoors Amazon.com : Shimano Rear DERAILLEUR, RD-R8000, ULTEGRA, GS 11-Speed, Shadow Design, Direct Attachment, W/OT-RS900(Black) : Sports & Outdoors](https://m.media-amazon.com/images/I/61ssiG2XibL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : Shimano Rear DERAILLEUR, RD-R8000, ULTEGRA, GS 11-Speed, Shadow Design, Direct Attachment, W/OT-RS900(Black) : Sports & Outdoors
![Amazon.com : Shimano Rear DERAILLEUR, RD-R8000, ULTEGRA, GS 11-Speed, Shadow Design, Direct Attachment, W/OT-RS900(Black) : Sports & Outdoors Amazon.com : Shimano Rear DERAILLEUR, RD-R8000, ULTEGRA, GS 11-Speed, Shadow Design, Direct Attachment, W/OT-RS900(Black) : Sports & Outdoors](https://m.media-amazon.com/images/I/817rgwJKUXL._AC_UF1000,1000_QL80_.jpg)