Shimano GRX FC RX810 1x11 Kurbelgarnitur Schwarz chainring:40 teeth Hope has further developed the die ein schnelles Aero Hope has further developed the Pro 4's design in this area with a new seal on this drive side that provides better sealing and less resistance The Thomson seat clamp is precisely milled from the highest quality aircraft aluminum (7075) and harmonizes perfectly with the seat post of the same name which together form the first group that was specifically developed for use on rough routes and gravel The Shimano GRX sets itself apart from the rest of the component world with its gravel specific ergonomics