Rotor Qrings chainring set for Shimano Ultegra 6800/8000 or Dura Ace 9000/9100
Rotor Oval TEST Q-Ring Road Chainrings 110x5 BCD 50t Aero - RED Color | eBay
ROTOR Bike Components - 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. #