Shimano GRX RD-RX817 Di2 Shadow+ 11 Speed Rear Derailleur - Rear Derailleur - 11 Speed - Black - Mid Cage - 42T Max YGroup_7033622888493 Rear Flat Mount

Rear Flat Mount

It offers better impact resistance and more shin coverage than the Speed pad and is more pedal-friendly than the Raid pad

high intensity LED

It then clicks when you reach the set torque limit

The Padrone reports all your standard functions and is wireless for a clean look and function

Shimano GRX RD-RX817 Di2 Shadow+ 11 Speed Rear Derailleur - Rear Derailleur - 11 Speed - Black - Mid Cage - 42T Max YGroup_7033622888493 Rear Flat MountThis top quality rear mech is engineered to give you perfect shifting performance when riding on rough roads, gravel and muddy conditions. Ready to take on any challenge, the RX817 features an adjustable chain stabiliser which prevents chain slapping and drops. Shimano has also included a switch stabiliser which can be set to on off to match the terrain conditions, which allows you more freedom to explore the unknown. Whether you're planning a new