Shimano GRX ST-RX610 Shift/Brake Lever with BR-RX400 Hydraulic Disc Brake Caliper – Left/Front 2x Flat Mount Caliper Black. 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 |
Color |
Black |
Brake Caliper Mount |
Flat Mount |
Hydraulic Fluid Type |
Mineral Oil |
Brake Lever Use |
Left |
Pad Compound |
Resin |
Hydraulic Hose Length |
1000 |
Adjustable Reach |
Yes |
Adjustable Contact Point |
No |
Drivetrain Speeds |
12 |
Defined Color |
Black |
Front Der/Shifter Compatibility |
Shimano Road |
Shifter/Derailleur Compatibility |
Shimano |
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