Product Description
GRX ST-RX400 10 speed shifters and flat mount BR-RX400 hydraulic calipers
Anti-slip brake lever increases control on bumpy terrain
Raised brake lever pivot point increases leverage from the hoods
Adjustable lever reach
Compatible with GRX RD-RX400 and Tiagra 4700 derailleurs
Forged aluminum BR-RX400 calipers
Pre-assembled with SM-BH90-JK-SSR high power hose
Includes L03A resin pads with improved wear resistance