Rotor Qrings Aero chainring set for Shimano Ultegra 6800/8000 or Dura Ace 9000/9100 - Velo-Perso.com
ROTOR Bike Components - Now you can assemble your Shimano® Dura-Ace R9100 or Shimano® Ultegra R8000 cranks (covers also available) with the new ROTOR Q RINGS BCD110X4 and enjoy all the advantages