Shimano FC-R8100 Ultegra Double Crankset - 12 Speed

Optimal balance of stiffness, strength, weight and rotational performance
Hollowglide structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting
148mm Q-factor
44.5mm chainline
Number of Chainrings: Double
Pedal Spindle: 9/16"
Crank Intended Use: Road
Chainline/Hub Compatibility: 130 Hubs
Rings: choose; 50/34, or 52/36
Spindle Interface Type: Shimano Hollowtech II
Drivetrain Speeds: 12
Chainring BCD: 110mm 4-Bolt, Shimano Asymmetric
BB Included: No
Color: Black