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An increase in pad clearance at the calliper has enabled Shimano to use there proven Servo Wave technology in this hydraulic brake lever
The perfect teeth design results in a perfect synchronisation between shifting and chain movement
Increased rollback of the brake pads
IPX5 water resistant standard
Spoke Material: Stainless Steel
Shimano GRX RX400 Rear Derailleur - 10 Speed Fork Travel_150mm An increase in pad clearanceShimano GRX RX400 Rear Derailleur 10 Speed If you like to take on rough and challenging trails on your adventure road bike or gravel bike, the GRX 400 10 Speed rear mechanism will bring you fast and reliable gear changes, no matter how rough your route gets. Also, to ensure excellent chain retention and prevent your chain from damaging your frame, Shimano has added a gravel tuned switchable clutch system. This can be turned off or on to suit the
