Sram Rear Derailleur Pulley Kit

SRAM X-Sync Pulley Wheel Assembly Kit Black, 11 Speed, X01/GX/NX/Force 1/Rival 1

SRAM X-Sync Pulley Wheel Assembly Kit Black, 11 Speed, X01/GX/NX/Force 1/Rival 1

SRAM Jockey Wheel Set (X-Sync) for X01/X01DH Rear Derailleur (1 Pair), 11.7518.032.000

SRAM X-SYNC PULLEY ASSEMBLY

SRAM X-Sync Pulley Assembly - Black