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The Shimano GRX FD-RX400 front derailleur offers lighter front shifting and extra front tire clearance for gravel bikes.An ergonomic power curve and link (toggle) construction help to provide a natural stroke feeling when shiftingAn additional 2.5mm is added to the chainline to provide more room for wider tiresCompatible only with ST-RX400, ST-RS405, SL-4700, ST-4720, and ST-4725 shift leversCompatible with up to 42mm tiresLink (toggle) construction allows for more cable routing optionsIntegrated cable tension adjustment16t total capacityItem SpecificationsDrivetrain Speeds10Double or TripleDoubleDerailleur Capacity16Front Der/Shifter CompatibilityShimano RoadFront Derailleur Cable PullBottom PullFront Derailleur ClampBraze-onFront Derailleur StyleTopswingMax Ring (teeth)46