Shimano GRX 400 ST-RX400 2x10S hydraulic control lever

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.


Features

  • Greater control on mixed terrain.
  • Gravel-specific ergonomics and lever body.
  • Non-slip brake lever.
  • Same low energy shifting as the more advanced systems.
  • Lever travel adjustment.
  • Included shift inner cable.


Technical specifications

  • Clamp diameter: 23.8 - 24.2 mm.
  • Shimano mineral oil.
  • Recommended brake caliper: BR-RX400.
  • Brake hoses: SM-BH90-JK-SSR, SM-BH90-J-SSR.
  • Hose junction: Straight.
  • Max. multiple shifts: 2.
  • SIS Shimano Index System.
  • DCL Dual Control Lever.
  • Actual weight: 306 g.


Technologies

Optislick

Optislick cables feature a minimal and uniform electrically coated layer that improves cable routing efficiency and provides excellent corrosion resistance.

DCL (Dual Control Lever)

It has brake and shifting functions in the system and enables easy operation. Ergonomic innovation is probably more critical to the higher standard performance than the added gearing. The shift internals borrow the robustness from Shimano's MTB technology and are so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of Shimano Total Integration, and simply has to be experienced to be understood.

The 105 Dual Control Lever has an optimized structure with features that include the lighter weight pivot section in the near side of the shifting unit and the integral shifting cable for lighter steering. Its many component parts are made so compact and precise to achieve unprecedented high-speed performance.