DER PART KOGEL PULLEY ALLOY OS 12/14T FULL-CERAMIC SHI R9100/R8000/R7000 PR BK/BU

Pulley for the latest generation of Shimano derailleurs: Dura Ace R9100, Ultegra R8000 and 105 R7000 as well as the long cage of a Sram Wifli
Narrow wide tooth profile benefits include reduced articulation in the chain while retaining accurate shifting
May require use of a longer chain