GRX ST-RX610 / BL-RX610 / BR-RX400 gravel bike 6 rings on spider (3+3

6 rings on spider (3+3 structure)

8mm Upsweep 4

37mm valve stem length

100mm/135mm Pair For Road Wheels

GRX ST-RX610 / BL-RX610 / BR-RX400 gravel bike 6 rings on spider (3+3The GRX 610 Dual Control Lever and GRX BR RX400 hydraulic brakes. The GRX 610 delivers light and responsive shifting. The ergonomic shifter design improves comfort and the textured, anti slip brake lever increases control. With a low profile flat mount design, the GRX BR RX400 hydraulic disc brakes provide greater control. All in the total package gives confidence and performance for mixed terrain riding. GRX ST RX610, 12 speed shifters and flat mount