Shimano Ultegra 9/10-Speed Rear Derailleur Pulley Set fit RD-6700 6500 6600 6770 | eBay
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Shimano Ultegra 6700-A 10-Speed Rear Derailleur Pulley Set, ver.2 | Tree Fort Bikes
Hi! I have these Ultegra 6700 shifters and a Deore 9 speed rear derailleur. They work fine, but they "lose adjustment" pretty easily. I'm thinking about upgrade into this Shimano GRX RD-RX400 (