Shimano GRX ST-RX600 Mechanical Right Brake Shiftlever 11-Speed Sunshine_Enriched The designs and materials have

The designs and materials have passed extensive life and ultimate strength tests

Hope floating discs have been redesigned with a wider braking surface to enable them to be used as a replacement on many other braking systems in addition to their own

UCP spokes

Shimano Di2 compatible

Shimano GRX ST-RX600 Mechanical Right Brake Shiftlever 11-Speed Sunshine_Enriched The designs and materials haveSHIMANO 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