52-36 and 50-34 chainring options.
Shimano Ultegra R8100 NEW 52/36 Chain Rings 12 Speed
Shimano Ultegra R8100 Crank Arm Protection Set | Shield Clear Vinyl | Cyclistick
Shimano Ultegra R8100 Chainring Set 50/34 NK 12 spd
Shimano Ultegra R8100 DI2 2x12 24-Speed Road Crankset 50-34T/52-36T/160MM-172.5
Shimano Ultegra R8100 Crank Arms 175mm 12 Speed - Near Mint
Aero Road Bike Chainring 50-34T 52-36T 54-40T for Shimano Ultegra R8100 12-Speed
