Plateau Intérieur 12V SHIMANO GRX RX820 80mm Tooth profile:31 elle présente un profil bas PBS_ASSO059292 elle présente un profil bas réactif et confortable pour un excellent transfert de puissance et un nez court améliorant la stabilité tout en autorisant des positions aérodynamiques agressives this weight is achieved thanks to the Removable Bladders technology used by the American brand to eliminate carbon irregularities inside the seatpost and avoid unnecessary excess material The SHIMANO GRX RX820 80 mm 12 speed inner chainring is designed to be fitted on double cranksets from the Gravel RX820 range it is made from anodised aluminium and guarantees maximum rigidity for optimal power transfer with every pedal stroke