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.
| Brake Lever Actuation |
Hydraulic |
| Double or Triple |
Double |
| Rotor Included |
No |
| Brake Caliper Mount |
Flat Mount |
| Brake Lever Use |
Left, Right |
| Drivetrain Speeds |
12 |
| Front Der/Shifter Compatibility |
Shimano Road |
| Shifter/Derailleur Compatibility |
Shimano |
| Color |
Black |
| Hydraulic Fluid Type |
Mineral Oil |
| Pad Compound |
Resin |
| Hydraulic Hose Length |
1000, 1700 |
| Adjustable Reach |
Yes |
| Adjustable Contact Point |
No, Yes |
| Defined Color |
Black |
| Rear Der/Shifter Compatibility |
Shimano Road |
