Shimano Ultegra FC-R8100 Crankset - 175mm, 12-Speed, 52/36t, Hollowtech II Spindle Interface, Black

An integral part of the Shimano Ultegra 12-speed road lineup, the FC-R8100 crankset builds upon Shimano's legendary front shifting and transmission efficiency. With new refinements for seamless 12-speed shifting, the Ultegra crank is now offered in a wide variety of lengths, bringing performance and improved fit for smaller riders, triathletes, and riders with specific biomechanic requirements. 148mm Q-factor 44.5mm chainline 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 Item Specifications BB Included No Chainline/Hub Compatibility 130 Hubs Chainring BCD 110 Shimano Asymmetric Color Black Crank Intended Use Road Crank Length (mm) 175 Defined Color Black Drivetrain Speeds 12 Number of Chainrings Double Pedal Spindle 9/16" Rings 52/36 Spindle Interface Type Shimano Hollowtech II Shimano Ultegra FC-8100 12-Speed