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.

• 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
• BB Included: No
• Chainline/Hub Compatibility: 130 Hubs
• Chainring BCD: 110 Shimano Asymmetric
• Color: Black
• Crank Intended Use: Road
• Crank Length (mm): 172.5
• Defined Color: Black
• Drivetrain Speeds: 12
• Number of Chainrings: Double
• Pedal Spindle: 9/16″
• Rings: 50/34
• Spindle Interface Type: Shimano Hollowtech II