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Shimano Ultegra R8100 12-Speed Crankset
August 21, 2025Price range: $365.00 through $435.00
Shimano’s best-selling Ultegra 12-speed road crankset
We offer free shipping on orders in the U.S. of $75 or more.
We also ship fast! In stock orders placed before 4 pm PT almost always ship the same day!
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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
Compatibility:
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: 46/36 | 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.
Compatibility
This crankset is compatible with Shimano 24 mm bottom brackets and 12-speed groupsets.
Specs
- 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 shop for the required tools on our Tools Page.
- Shimano Crank Arm Cap Tool
- 5 mm Allen key
Q&A
Have a question about this? Ask the staff.
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Shimano 105 R7100 12-Speed CranksetPrice range: $215.00 through $225.00A lightweight, affordable crankset for Shimano Di2
THIS PRODUCT IS FREQUENTLY BOUGHT WITH
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Shimano Ultegra/XT-level chain. Compatible with all 12-speed road and MTB drivetrains including e-Bikes -
For the instillation or removal of Shimano Hollowtech II cranks -
Wolf Tooth WT-G Precision Bike GreasePrice range: $7.95 through $24.95All-purpose bike grease for your cycling-specific needs -
Shimano's Ultegra 12-speed road cassette for Di2 and mechanical groupsets
Ivana Seric (verified owner) –
Fast processing and shipping from Power Meter City. It’s been difficult to find shorter crank arms lately since everyone is trying to switch now, but no issues here.
Power Meter City –
Thanks for the review, Ivana! We’re glad we could help you find the shorter crank arms quickly despite the demand. Appreciate your support!
David C (verified owner) –
Wanted to move to a shorter crank for less stress on the hips and knees can already feel the difference. Ultegra has always been a great product for the price. And timely/professional order fulfillment from Power Meter City. Will not hesitate to order from them again!
Power Meter City –
Thank you for the thoughtful feedback, David! We’re glad the move to a shorter crank is already making a positive difference for you. Ultegra is definitely a solid choice, and we’re happy to hear our service met your expectations. We truly appreciate your support and look forward to helping you again in the future! Ride safe!