ROTOR_bike on Twitter: "Now you can assemble your Shimano® Dura-Ace R9100 or Shimano® Ultegra R8000 cranks with the new ROTOR Q RINGS BCD110X4 and enjoy all the advantages of oval chainrings. #ROTORbikecomponents #
Rotor 4 Bolt Q Ring Chainring Set For Shimano Ultegra/Dura Ace