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Shimano Ultegra R8100 12-Speed Crankset

Niel Ubod July 12, 2024


Balance price and performance with Shimano’s best-selling Ultegra 12-speed crankset!

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Shimano Ultegra R8100 12-Speed Crankset

The Shimano Ultegra R8100 12-Speed Crankset nicely balances performance and price. Weighing only 700 grams, the R8100 features Shimano’s HOLLOWTECH II technology which reduces weight while maintaining stiffness for power transfer.  In addition, this crankset is available with 50/34T or 52/35T chainrings which when paired with Shimano’s 12-speed cassettes provides excellent  road gearing.


Key Product Details


This Shimano Ultegra crankset is compatible with Shimano Di2 drivetrains and 24 mm bottom brackets.

Key Features:

Lightweight, HOLLOWGLIDE technology for smooth shifting, clean aesthetics and excellent gearing options. See Specs tab for more information.

Advice From Our Staff:

Shimano’s Ultegra crankset is made for riders who are looking to balance both performance and price. It is lightweight and provides riders with premium shifting without the cost associated with top tier components.


Options For This R8100 Crankset

  • Crank arm lengths: 160 mm | 165 mm | 170 mm | 172.5 mm | 175 mm
  • Chainring sizes: 50/34 | 52/36


Other Versions to Consider

105 R7100 Crankset: For riders who are looking for a Shimano 12-speed crankset that is still compatible with Shimano 12-speed Di2 but is more affordable, we recommend the Shimano 105 R7100 12-Speed Crankset.

DURA-ACE R9200 Crankset: For riders who are looking for Shimano’s top-tier components for maximum performance gains or larger chainrings, we recommend the Shimano DURA-ACE R9200 12-Speed Crankset.


This crankset is compatible with Shimano 24 mm bottom brackets and 12-speed groupsets.


  • Interface: 110 BCD 4-Bolt
  • Crank Arm Material: Aluminum
  • Chainrings: 2x
  • Speeds: 12
  • Spindle Size: 24 mm
  • Chainline: 44.5 mm
  • Q-factor: 148 mm
  • Weight: 700 grams

Tools Needed for Installation

You will need the following tools for installation of this product. You can purchase many of these commonly used tools in our store.

  • Shimano Crank Arm Cap Tool
  • 5 mm Allen key

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