ROTOR Bike Components - If you have Shimano® Dura-Ace R9100 or Shimano® Ultegra R8000 cranks, you can now assemble them with the new ROTOR Q RINGS BCD110x4 oval chainrings. They are 100%
Rotor Qrings Aero chainring set for Shimano Ultegra 6800/8000 or Dura Ace 9000/9100 - Velo-Perso.com
Rotor Qrings chainring set for Shimano Ultegra 6800/8000 or Dura Ace 9000/9100 - Velo-Perso.com