Availability: 10 in stock
The Shimano RD-R8150 Ultegra Di2 Rear Derailleur Bracket Axle Unit is a factory replacement part that connects select Shimano road and gravel bike rear derailleurs to a bicycle’s derailleur hanger. If the stock bracket axle kit has become damaged, this replacement part will help to properly align the body of the rear derailleur for optimal shifting performance.