This P-Cover Unit can only be used with Shimano Deore XT RD-M8100 12 speed rear derailleurs.
The following are a “B” match which indicates that the parts are usable, but differ in materials, appearance, finish and size etc.
– Shimano XTR RD-M9100-SGS
Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.