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 4iiii Dual Precision Pro Powermeter Crankset– 175mm 52/36T
Shimano ULTEGRA R8100 4IIII PRECISION 3+ PRO POWERMETER (50/34)
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
