The 12-speed Shimano GRX RX715 Di2 Dual Control lever offers fast, wireless shifting and excellent braking power with an optimized modulation for gravel riding. The RX715 Di2 shift/brake lever is paired with a GRX BR-RX410 flat mount disc brake caliper that brings a new level of control to gravel cycling with enhanced modulation and a quicker initial braking point. And despite its compact construction, the system is quieter and easier to maintain.