Shimano Ultegra CS-R8101 Cassette - 12-Speed | 11-34t
Cassettes
Shimano Ultegra CS-R8101 Cassette - 12-Speed · 11-34t
Shimano Ultegra CS-R8101 Cassette - 12-Speed | 11-34t
The Shimano Ultegra CS-R8101 brings HYPERGLIDE+ technology to Ultegra-level riders, enabling uninterrupted shifting under full pedaling load whether climbing, sprinting, or accelerating out of corners. Read the overview
At a glance
- Speed
- 12-speed
- Range
- 11-34T
- Model
- CS-R8101
- System
- HYPERGLIDE+
1 in stock
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Overview
Why Is the Shimano Ultegra CS-R8101 the Go-To 12-Speed Cassette for Serious Road Riders?
The Shimano Ultegra CS-R8101 brings HYPERGLIDE+ technology to Ultegra-level riders, enabling uninterrupted shifting under full pedaling load whether climbing, sprinting, or accelerating out of corners. Larger driving cogs maximize drivetrain efficiency and the cassette is compatible with both Shimano 11-speed and 12-speed freehub bodies, making it a clean upgrade path for riders on existing wheelsets. The 12-speed gear range provides closely spaced steps for superior cadence control across the full variety of road terrain.
Compatible with Shimano Ultegra R8100 and R8150 12-speed drivetrains. Also compatible with existing Shimano 11-speed freehub bodies. Requires a 12-speed chain.
All the specs
MPN ICSR810112134
- Model
- CS-R8101
- Speed
- 12-speed
- Range
- 11-34T
- System
- HYPERGLIDE+
- Freehub compatibility
- Shimano 11-speed and 12-speed freehub bodies
- Groupset match
- Ultegra R8100 / R8150
FAQ
Good questions
Get to know Shimano
There's more to Shimano than this one product. Our Shimano page has the full Shimano lineup we carry and more about the brand.
Visit the Shimano page →Can the CS-R8101 be used with my existing 11-speed wheelset?
Yes. The CS-R8101 is compatible with standard Shimano 11-speed freehub bodies, so upgrading to Ultegra 12-speed does not require new wheels.
Is the CS-R8101 compatible with Dura-Ace R9200 derailleurs?
Yes. Shimano 12-speed road cassettes are cross-compatible across Dura-Ace and Ultegra within the R9200 and R8100 series.
What chain should I use with the CS-R8101?
Use a Shimano 12-speed chain. Shimano uses the same chain platform across Dura-Ace R9200 and Ultegra R8100 12-speed road drivetrains.
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