Shimano GRX ST-RX400/BR-RX400 Hydraulic Disc Brake Brake/Shift Levers

GRX ST-RX400 Brake/Shift Lever & Disc Brake

Gravel inspired Dual Control shift/brake lever and bracket ergonomics

Anti-slip brake lever

Same light shifting operation as top tier systems

Tooled reach adjust allows for lever to be adjusted to fit multiple hand sizes and riding preferences

Compatible only with FD-4700 and FD-RX400 front derailleurs and RD-RX400 and RD-4700 rear derailleurs