Shimano GRX ST-RX810-R 11 Speed Right Shift/Brake Lever Orange Seal Realistic and smooth pedal strokes

Realistic and smooth pedal strokes

Shimano Hydraulic Disc Brake Fluid

and there are also 4 manual speed settings should you want to set your own ideal airflow

ZERO LOSS ZERO LOSS simply means

Shimano GRX ST-RX810-R 11 Speed Right Shift/Brake Lever Orange Seal Realistic and smooth pedal strokesSHIMANO GRX Hydraulic Disc Brake DUAL CONTROL LEVER 11 speed 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. Greater mixed terrain control Gravel inspired lever and bracket ergonomics Anti slip brake lever Same light shifting operation as top tier road systems