Optimal balance between stiffness, strength, weight, and rotational performance. The HOLLOWGLIDE structure reduces weight while maintaining strength for better power transfer and faster, more precise shifting. Chainring combinations of 52-36 and 50-34 are available, with crank lengths of 160, 165, 170, 172.5, and 175 mm.

As part of the new 12-speed road bike series, the FC8100 crankset benefits from the legendary chainring shifts and overall efficiency of the Shimano drivetrain. The ULTEGRA crankset is now available in lengths ranging from 160 to 175 mm, providing higher performance and a better position for smaller riders, triathletes, and those with specific seating position requirements.