Shimano 105 FC-R7100 Crankset

The newly designed crank arms offer an optimized balance between lightweight and efficiency. The crank, formed with hollow aluminum technology, is anodized with a beautiful gloss black anodized finish, giving it a luxurious look. The resin ribs on the back of the chainrings are Shimano 105's unique structural design that achieves both thorough weight reduction and crisp shifting performance.* Optimal balance of stiffness, strength, weight and rotational performance* Hollow aluminum crank arms* Gear combination: 50-34T, 52-36T* Compatible with 12-speed chain* Recommended chain (not included): CN-M7100* Recommended Bottom Bracket (not included): SM-BBR60 (threaded)/SM-BB72-41B (press-fit)* Q-factor: 148 mm