Shimano Dura-Ace FC-9000 110mm 11-Speed Inner Chainring (39T)
This is a Shimano Dura-Ace 9000 Chain Ring for the inner position on Dura Ace, Ultegra, or 105 11-Speed Cranksets. Inner Chainrings should only be paired in appropriate teeth configurations with outer rings as follows:
Chainring BCD: 110 Asym
Ring Position: Inner
Chain Compatibility: Shimano 11
This product was added to our catalog on March 7, 2018.