Shimano GRX ST-RX400Shifter/Brake Set The Shimano GRX ST-RX400 Shifter/Brake delivers light and responsive shifting for mixed-terrain riding. The shifter features an ergonomic design that improves comfort and a textured brake lever that increases control on bumpy roads or trails. With the new GRX line from Shimano, you get quick and intuitive shifting along with lever reach adjustment to perfectly dial in your ride. Shifter Features Gravel inspired lever and bracket ergonomics Anti-slip brake lever with reach adjust Greater mixed-terrain control Same light shifting operation as top tier systems Shifters sold individually, left or right Caliper Features Excellent heat dissipation Flat mount Convenient tool access Simple wheel replacement Easy and clean bleeding system Never hesitate to tackle rough surfaces Simple set up and maintenance Specifications Weight: 307g (Shifter only)Brake caliper: BR-RX400Cable Type: OPTISLICKFront shifter speeds (left):2Rear shifter speeds (right): 10 | Shimano | Grx St-Rx400 Shifter/brake Set Front, 2 Speed