Shimano Ultegra FC-R8100 2x12-Speed Crankset 50/34 Teeth 172.5mm Black

The Shimano Ultegra FC-R8100 crankset is designed for riders building a road bike with a 12-speed drivetrain. It has 50/34-tooth chainrings and black 172.5 mm cranks, with a Hollowtech II interface.

• 50/34-tooth chainrings: gearing suitable for both flat roads and climbs
• Compatible with 12-speed drivetrains
• 172.5 mm cranks, a size to check against your height
• Shimano Hollowtech II interface: check that your frame is compatible
• The bottom bracket is not included and must be purchased separately

Technical specifications

• Crank length: 172.5 mm
• Chainrings: 50/34 teeth (double)
• BCD: 110 Shimano Asymmetric
• Chainline: 44.5 mm
• Q-factor: 148 mm
• Interface: Shimano Hollowtech II
• Pedal axle: 9/16"
• Speed: 12
• Colour: Black
• Bottom bracket included: No

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.