Shimano GRX ST-RX600 Mechanical Shift and Hydraulic Brake Lever Smith Optics the center tread blocks provide

the center tread blocks provide maximum traction and accurate steering

Less gripping power is required due to its conical shape

3D vent mesh allows for cooling air flow

• Rebuild kits include Left + Right axles

“chop” on initial hits

Shimano GRX ST-RX600 Mechanical Shift and Hydraulic Brake Lever Smith Optics the center tread blocks provideGRX ST RX600 Shifter Hydraulic Brake Lever ST RX600 Dual Control shift brake levers provide the same light shifting operation as top tier systems Anti slip lever design Reach adjust mechanism allows lever to be adjusted to suit any hand size, type of riding and individual rider preferences Adjustable Reach Yes Brake Lever Actuation Hydraulic Hydraulic Fluid Type Mineral Oil Includes Brake No Rear Der Shifter Compatibility Shimano Road Rotor Included