The Shimano 105 FC-R7100 Crankset is engineered for performance, striking an optimal balance between lightweight design and exceptional efficiency without compromising on stiffness. Crafted using hollow aluminum technology and finished with a durable gloss black anodized coating, this crankset is built to withstand the rigors of road cycling. Notably, the unique resin ribs on the back of the chainrings contribute to a structural design that enhances both weight reduction and crisp shifting performance.Optimal balance of stiffness, strength, weight, and rotational performanceHOLLOWGLIDE structure reduces weight while maintaining strength, allowing for better power transfer and quicker, more precise front shiftingHollow anodized aluminum arms provide lightweight rigidity and durability44.5mm chainline for improved compatibility148mm Q-factor for enhanced pedaling efficiencyCompatible with HG 12-speed chains for seamless integration with modern drivetrains