Shimano GRX RX 815 Series Dealer's Manual page 47

INSTALLATION/REMOVAL
Temporarily installing the dual control lever
2.
Loosen the clamp bolt, and pass the clamp band through the
handlebar.
The clamp bolt is on top of a bracket which has had its bracket cover turned over.
Clamp band
NOTICE
• Loosen the clamp bolt sufficiently. The handlebar may be damaged when
passing the clamp band through the drop handlebar.
Clamp bolt
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