Shimano Dura-Ace R9100 Chainring (Black) (110mm BCD) (Offset N/A) (55T) - Y1VP98050
Shimano Dura-Ace R9100 Chainring (Black) (110mm BCD) (Offset N/A) (55T) - Y1VP98050, Shimano Dura-Ace R9100 11-Speed Chainrings Specs: Tooth Count55 Ring Position/TypeOuter Drivetrain Speeds11 Chainring BCD110 Shimano Asymmetric ColorBlack Defined ColorBlack MaterialAluminum