Shimano Ultegra FC-R8100 crankset 2x12-speed 50/34 teeth, 175mm

The Shimano Ultegra FC-R8100 crankset is designed for those building a road bike with a 2x12-speed drivetrain and looking for precise pedalling. It has 50/34-tooth chainrings and a 175 mm crank arm.

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

Technical specifications

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