Ceramicspeed OSPW fits Ultegra RD-R8050/Dura-Ace RD-R9150 11-Speed Derailleur. SRAM Red AXS eTap D1 33t Electronic 12-Speed Rear Derailleur w/ Battery 302g. Cage Length/Max Cog Size: 33t. SRAM Red AXS XPLR E1 MAX 46t 13-Speed Bike Rear Derailleur 379g No Battery.
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