The GRX ST-RX400 lever is a simple and intuitive dual control for gear shifting and hydraulic disc brake operation. This solution is very convenient, allowing the cyclist to react almost immediately depending on the situation. The model performs exceptionally well on gravel bikes, where, due to riding on varied terrain, speed control and gear shifting need to be at a high level. Therefore, the lever features an ergonomic design that ensures an excellent grip. It is covered with a non-slip texture on the outside, preventing hands from sliding, even when sweaty or wet from rain.

What technologies has the Japanese manufacturer applied to the GRX ST-RX400 model? One of them is the Shimano Index System, which ranks gear shifting smoothness. Additionally, the model includes the Reach Adjust technology, ensuring perfect lever adjustment not only according to hand size but also personal preferences.