![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 ( 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 (](https://i.redd.it/lgvgl68esbj71.png)
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 (
![Shimano Ultegra FC-6700 Crankset 10 Speed 172.5mm 50/34t 110mm BCD - Weight, Specs, Pricce | The Pro's Closet Shimano Ultegra FC-6700 Crankset 10 Speed 172.5mm 50/34t 110mm BCD - Weight, Specs, Pricce | The Pro's Closet](https://cdn.shopify.com/s/files/1/2318/5263/products/CCK10435a_CT_01.jpg?v=1604170352)
Shimano Ultegra FC-6700 Crankset 10 Speed 172.5mm 50/34t 110mm BCD - Weight, Specs, Pricce | The Pro's Closet
![EuroBikeParts: Shimano Ultegra R8170 12s Di2 Hydraulic Disc Electronic Group, Shimano, SH-UL8170-Di2-Full EuroBikeParts: Shimano Ultegra R8170 12s Di2 Hydraulic Disc Electronic Group, Shimano, SH-UL8170-Di2-Full](https://www.eurobikeparts.com/prodimages/ShimanoR8170FullGroup2_medium.png)
EuroBikeParts: Shimano Ultegra R8170 12s Di2 Hydraulic Disc Electronic Group, Shimano, SH-UL8170-Di2-Full
![Amazon.com : Shimano Ultegra 6700 10-Speed RD-6700 Outer Plate & Plate StopPER PIN (GS-TYPE) - Y5X998040 : Sports & Outdoors Amazon.com : Shimano Ultegra 6700 10-Speed RD-6700 Outer Plate & Plate StopPER PIN (GS-TYPE) - Y5X998040 : Sports & Outdoors](https://m.media-amazon.com/images/I/41kSIutV6DL._AC_UF1000,1000_QL80_.jpg)