Shimano GRX ST-RX600+BR-RX400 11 speed rear disc brake control

SHIMANO GRX Hydraulic Disc Brake DUAL CONTROL LEVER 11-Speed ​​Rear

The SHIMANO GRX DUAL CONTROL LEVER provides light, responsive shifting for use on mixed terrain.
The ergonomic design increases comfort and the lever with non-slip surface increases control on rough surfaces.

Greater control on mixed terrain
Gravel-specific ergonomics and lever body
Non-slip brake lever
Same low-energy gear shifting as the most advanced systems