Shimano GRX ST-RX400 Hydraulic Brake/Shift Lever - Left 2x10-Speed Black ModelNumber=K6477 Bar Clamp Diameter (mm) 22

Bar Clamp Diameter (mm) 22

T20 T25 bits

A file type tread pattern provides low rolling resistance and tight cornering in all road conditions

Drivetrain Speeds 10 Front Der/Shifter Compatibility Shimano Flatbar Road Shifter Style Trigger

Eight high-powered LED emitters offer top visibility and seven output modes including a daytime flash mode (up to 30 lumens) and our Wide-Angle Optics for up to 270-degree of visibility

Shimano GRX ST-RX400 Hydraulic Brake/Shift Lever - Left 2x10-Speed Black ModelNumber=K6477 Bar Clamp Diameter (mm) 22Shimano GRX ST RX400 Hydraulic Brake Shift Lever Left 2x10 Speed Black. GRX ST RX400 Brake Shift Lever & Disc BrakeGravel 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