Shimano Ultegra FC-R8100 Crankset - 170mm, 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.Product Details: Hollowglide structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting Optimal balance of stiffness, strength, weight and rotational performance Specifications: BB Included: No Chainline/Hub Compatibility: 130 Hubs Chainring BCD: 110 Shimano Asymmetric Color: Black Crank Intended Use: Road Crank Length (mm): 170 Defined Color: Black Drivetrain Speeds: 12 Number of Chainrings: Double Pedal Spindle: 9/16" Rings: 52/36 Spindle Interface Type: Shimano Hollowtech II UPC: 192790894096 MPN: IFCR8100CX26