Shimano GRX RD-RX817 Di2 Shadow+ 11 Speed Rear Derailleur - Rear Derailleur - 11 Speed - Black - Mid Cage - 42T Max eBay The equivalent Park Tool to

The equivalent Park Tool to this is the BBT-79

With a couple turns of the removable tool

but if you get bamboozled with your fork settings

no matter what you're up against

Shimano GRX RD-RX817 Di2 Shadow+ 11 Speed Rear Derailleur - Rear Derailleur - 11 Speed - Black - Mid Cage - 42T Max eBay The equivalent Park Tool toThis 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