Shimano Ultegra FC-R8100 2x12-Speed Crankset 50/34 Teeth 175mm

The Shimano Ultegra FC-R8100 crankset is designed for riders building a road bike with a 2x12-speed drivetrain who want precise pedalling. 50/34-tooth chainrings and a 175 mm crank.

• For Shimano 2x12-speed drivetrains, with 50 and 34-tooth chainrings
• 175 mm crank, a size to choose based on your height
• Anodised aluminium arms and a 24 mm steel spindle
• Fits a BSA bottom bracket shell measuring 68 mm
• Bottom bracket not included: requires SM-BBR60 or SM-BB72-41B

Technical specifications

• Crank: 175 mm
• Chainrings: 34-50 teeth
• Q-factor: 148 mm
• Chainline: 44.5 mm
• BCD: 110 mm, 4-arm asymmetric
• Spindle diameter: 24 mm
• Compatible BSA shell width: 68 mm
• Materials: anodised aluminium arms; steel spindle; aluminium chainring bolts
• Compatibility: Shimano 2x12-speed
• Colour: Black

Founded in 1921 in Sakai, Japan, by Shozaburo Shimano, Shimano is still based in the same city today. For cyclists, it makes drivetrains, brakes, wheels, pedals and cycling shoes. Its history in bicycle components began with the production of freewheels in 1922.