Shimano Ultegra, DA,11T Enduro Zero Ceramic Jockey Pulleys 11S,Black Delrin pair

Description

Enduro Zero Ceramic Bearing Jockey Wheels CNC machined from Delrin in the USA for precise shifting and quiet drive train performance. These are specific for all Shimano 10 or 11 speed drive trains (Dura Ace, Ultegra) with 11T jockey wheels, 5 mm bolt upper, and 5 mm bolt lower. The lower is directional and machined this way for even smoother and quieter running with less friction. Enduro Zero bearings have Japanese Grade 3 balls and silicone dual lip seals for smooth running and long lasting performance.
*CNC Machined in the USA from solid Delrin, these pulleys are much quieter, lower friction and longer lasting than aluminum types. Delrin is a very slippery and quiet material paired with a metal chain, yet very durable and much better than injection molded soft plastic types.
*These have high quality Enduro ceramic hybrid bearings installed with Japanese Grade 5 ceramic balls and dual lip seals to keep the dirt out.
*CNC machined caps also press in to protect the bearings (see photos to detail).
*These are 7.50 mm wide and have 5 mm upper and lower bolts. They are 11 teeth and there is a specific upper and lower version,  made this way for better shifting. The bottom jockey wheel has an arrow for the spin direction as they are are relieved for lower friction and quieter operation.
This sale is for 1 pair of BLACK Jockey Wheels, upper and lower.