With a low-profile Flat Mount design, the Shimano GRX BR-RX810 hydraulic disc brakes provide greater control for mixed-terrain riding. The Shimano GRX Dual Control Lever delivers light and responsive shifting for mixed-terrain riding. The ergonomic shifter design improves comfort, and the textured, anti-slip brake lever increases control on bumpy terrain. - Excellent heat dissipation - Flat mount and anti-mud specification - Convenient tool access - Simple wheel replacement - Easy and clean bleeding system - Never hesitate to tackle rough surfaces - Simple set up and maintenance - Gravel inspired lever and bracket ergonomics - Anti-slip brake lever - Greater mixed-terrain control - Same light shifting operation as top tier road systems