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1x specific for use with 10-44T XPLR and 10-36T cassettes
with modern cross-country races becoming rougher and more challenging
Excellent complement to the Racing Ralph (rear)
Compact design includes an integrated wireless unit
GRX ST-RX610 / BL-RX610 / BR-RX400 Freewheels 1x specific for use withThe 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
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