The Shimano Tiagra FD-R4000 2x front derailleur for 11-speed drivetrain delivers lighter front shifting with smooth natural shift action. Featuring Shimano's toggle link construction with an optimized cage design it creates the on-demand shift performance modern road riders demand.Toggle link construction delivers lighter front shifting with a smooth natural shift actionThe toggle link's 7 link bushings feature small precision-machined bearings that provide smoother shifting action improved shift precision enhanced durability and reduced wear on link materials Max 52t outer chainring and 16t total chain link capacity Designed for 43.5mm chainline61-66 degree chainstay angleCompatible with LinkGlide and HG 11-speed chains