Shimano GRX ST-RX400 Hydraulic Brake/Shift Lever - Left 2x10-Speed Black ModelNumber=K6477 A file type tread pattern

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

Made to last

T20 T25 bits

2 Defined Color Black ISO Width (mm) 42 ISO Diameter 622 / Road / 29" Tire Intended Use Gravel Tire Diameter 700c Tire Bead Folding Labeled Size 700 x 42 Tire Type Tubeless Ready Clincher PSI 70

Shimano GRX ST-RX400 Hydraulic Brake/Shift Lever - Left 2x10-Speed Black ModelNumber=K6477 A file type tread patternShimano 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