The Ultegra Hollow Tech II Crankset features an optimized lightweight design that doesn’t sacrifice stiffness.

• Wider gear pitch increases clearance between chain and leading teeth
• BB Included: No
• Chainline/Hub Compatibility: 130 Hubs
• Chainline/Hub Compatibility: 135/142 Road Disc Hubs > 415 mm Chainstay
• Chainring BCD: 110 Shimano Asymmetric
• Color: Black
• Crank Intended Use: Road
• Crank Length (mm): 170
• Defined Color: Black
• Drivetrain Speeds: 11
• Number of Chainrings: Double
• Pedal Spindle: 9/16″
• Rings: 53/39
• Spindle Interface Type: Shimano Hollowtech II
• Weight: 690