The Shimano GRX ST-RX610 dual control lever delivers light and responsive shifting for mixed-terrain riding (Note: BR1057 is a left non-shift variation for 1x set ups) . The textured hood and anti-slip brake lever surface increase control on bumpy terrain. The GRX BR-RX400 2-piston flat mount hydraulic disc brake caliper features a low-profile design with ICE technologies to provide greater control and excellent heat dissapation for mixed terrain riding.
- 12-speed shifter with brake lever for use with GRX RX610 12-speed systems
- Gravel-specific lever body ergonomics and anti-slip lever coating provides greater control on mixed terrain
- Reach Adjust mechanism allows the lever to be adjusted to suit any hand size, type of riding and individual rider preferences
- GRX BR-RX400 flat mount 2-piston brake caliper provides excellent heat dissipation with the help of Shimano's ICE technologies
- Convenient tool access with J-Kit allows for simple set up, maintenance, wheel replacment
- One Way bleeding makes cleaning and bleeding the system easy
- Includes L05A-RF pads with finned backplate and resin compound for enhanced heat dissipation
- Disc brake rotor sold separately