G-Form Pro-X4 Ankle Guard - Black S/M 28x66x23 Shimano ST-RX400-R GRX 10 speed

Shimano ST-RX400-R GRX 10 speed shift levers use a different cable pull than Shimano's 10 speed road shift levers

Clamp capacity: round and aero tubes from 22 to 76 mm (7/8" to 3") wide

two-bolt clamp makes for easy micro-adjustments of saddle position

5mm-->32mm-->29

Solution: the Park Tool Bottom Bracket Tool Retaining System

G-Form Pro-X4 Ankle Guard - Black S/M 28x66x23 Shimano ST-RX400-R GRX 10 speedThe G Form Pro X4 Ankle Guards are designed to provide athletes with superior protection and comfort. These ankle guards feature SmartFlex technology which hardens on impact to absorb energy and protect against injuries. The moisture wicking fabric ensures that your feet stay dry and comfortable while the low profile design offers a secure fit without restricting movement. SmartFlex technology hardens on impact for superior protection Moisture wicking