Ultegra R8000 Tension and Guide Pulley Set

##Shimano Ultegra R8000 Tension and Guide Pulley Set This Shimano Ultegra R8000 Tension and Guide Pulley Set is a genuine replacement part that is compatible with Ultegra RD-R8000 and Ultegra Di2 RD-R8050 rear derailleurs. Exactly the same as the pulleys originally supplied with your derailleur, the sealed bearings ensure your drivetrain is friction-free and runs smoothly and efficiently.