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Description
Redesigned for improved performance, the Shimano Ultegra FC-R8100 Chainset works with Shimano 12-speed drivetrains, providing increased chain contact for improved efficiency and power transfer. The cold-forged four-arm HollowTech II crank arms also help put all the watts down to the tarmac by managing to be both stiff and lightweight, thanks to their hollow aluminium construction.
Shifting has also improved, with the HollowGlide outer chainring’s rigidity offering hugely impressive gear changes, no matter how much strain the drivetrain is under at the time. It still uses Shimano’s renowned HollowTech II bottom bracket for durability and smooth running and there is a wide range of crank lengths and ratios available.
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Important Update for Our US Customers
We regret to inform you that due to ongoing challenges related to current US tariffs, shopping on Sigma Sports is temporarily unavailable for customers based in the United States.
We understand how disappointing this may be and sincerely apologize for any inconvenience caused. Please rest assured that we are actively exploring solutions to resume service and find the best way to support our US community.
We appreciate your patience and understanding during this time, and we look forward to welcoming you back as soon as possible.
If you require any further assistance, please reach out to the customer services team
— The Sigma Sports Team