The SM-RT64 disc brake rotors deliver powerful and consistent braking performance in all riding conditions. The mounting system makes installing and removing disc brake rotors quick and easy, thanks to the spline mount and lock ring design.
The SHIMANO GRX RX400 front derailleur offer lighter front shifting operation and easier setup thanks to the new link construction and integrated cable tensioner. It features a 2.5mm outboard chain line design to allow wider tire clearance for mixed-terra
With an integrated chain stabilizer mechanism, the SHIMANO GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON/OFF switch for the chain tensioner.