For use with Shimano Ultegra RD-R8000 11 speed rear derailleurs.

This Bracket Axle Unit can also be used on the following rear derailleurs:

– Shimano GRX RD-RX812
– Shimano GRX RD-RX810
– Shimano Ultegra RX RD-RX800-GS

These are an “A” match which indicates that the parts are the same in materials, appearance, finish & size etc.

If the correct Bracket Axle Unit is unavailable you can also use the unit from the following rear derailleur:

– Shimano Dura-Ace RD-R9100-SS

This is a “B” match which indicates that the parts are usable, but differ in materials, appearance, finish & size etc.

Genuine Shimano replacement part.