The Shimano GRX ST-RX820 left dual control lever delivers light and responsive mechanical shifting for mixed-terrain riding and racing (Note: LD0374 is a non-shift dropper post remote variation for 1x set ups). The ergonomic shifter design improves comfort by decreasing pressure on your palms while the textured anti-slip brake lever surface increases control on bumpy terrain. The SERVO WAVE brake lever action provides greater braking power with improved control.

Brake Lever Actuation	Hydraulic
Double or Triple	Double
Rotor Included	No
Hydraulic Fluid Type	Mineral Oil
Brake Lever Use	Left
Includes Brake	No
Adjustable Reach	Yes
Drivetrain Speeds	12
Front Der/Shifter Compatibility	Shimano Road