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Optimized for 1-1/2" Headsets: Designed specifically for 1-1/2" sized headsets
Its simplicity and reliability make it perfect for quick
and enjoy every moment of your cycling journey
Compatible with Multiple Chainring Sizes: This adjustment tool is designed for use with 56/43T
Shimano GRX Di2 RD-RX717-SGS 1x12-Speed Rear Derailleur pedal_flat Optimized for 1-1/2" Headsets: DesignedThe GRX RX717 rear derailleur is designed to handle the unpredictable demands of gravel riding. Paired with a wide 10 51T 12 speed cassette, it delivers the range and reliability needed to tackle steep climbs, fast flats and everything in between. Precise and Lightning Fast Di2 Shifting: With Shimanos advanced Di2 electronic shifting, the derailleur ensures quick, accurate gear changes in every condition. Whether you're pushing hard or riding