![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 R8070 2x11v Groupset With 2x11 Speed Di2 Shifters Brake R8050 Front Rear Derailleur Crankset Cassette Chains - Bicycle Derailleur - AliExpress Shimano Ultegra R8070 2x11v Groupset With 2x11 Speed Di2 Shifters Brake R8050 Front Rear Derailleur Crankset Cassette Chains - Bicycle Derailleur - AliExpress](https://ae01.alicdn.com/kf/H52aacd359bc3438390312fd54922d021p/SHIMANO-ULTEGRA-R8070-2x11v-Groupset-with-2x11-speed-DI2-Shifters-Brake-R8050-Front-Rear-Derailleur-Crankset.jpg_Q90.jpg_.webp)
Shimano Ultegra R8070 2x11v Groupset With 2x11 Speed Di2 Shifters Brake R8050 Front Rear Derailleur Crankset Cassette Chains - Bicycle Derailleur - AliExpress
![SHIMANO Unisex's RD-6700 Tension & Huide Pulley Set, Black, only Size : Everything Else - Amazon.com SHIMANO Unisex's RD-6700 Tension & Huide Pulley Set, Black, only Size : Everything Else - Amazon.com](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/41ZPaTj28SL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOURANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA739%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
SHIMANO Unisex's RD-6700 Tension & Huide Pulley Set, Black, only Size : Everything Else - Amazon.com
![original 2014 new Ultegra Di2 Electronic 6700/6800/6870 11 speed GroupSet Group Set 14psc|set generator|set dressset cocktail - AliExpress original 2014 new Ultegra Di2 Electronic 6700/6800/6870 11 speed GroupSet Group Set 14psc|set generator|set dressset cocktail - AliExpress](https://ae01.alicdn.com/kf/HTB1CMdFIXXXXXX_XFXXq6xXFXXXl/original-2014-new-Ultegra-Di2-Electronic-6700-6800-6870-11-speed-GroupSet-Group-Set-14psc.jpg)