ROTOR_bike on Twitter: "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% compatible
absoluteBLACK | Premium OVAL Rings for DA9100 & Ultegra 8000
Best of PEZ: Colnago V3 Project Bike Build & Ride - PezCycling News
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. #