The Shimano Ultegra CS-R8101 12-Speed Cassette features a new tooth profile designed to work with both electronic and mechanical Shimano drivetrains. The tooth profile has been slightly changed to better accommodate mechanical shifting. This cassette is suitable for both Di2 and mechanical shifting systems. It offers a refined 12-step gear combination that provides peak efficiency and accelerating performance for every racing situation. The cassette provides faster, smoother shifts under maximum pedaling force. It is compatible with new 12-speed (HG-Spline-L2) and road 11-speed (HG-11) freehub bodies. The Shimano Ultegra CS-R8101 12-Speed Cassette is available in two range options: 11-30t and 11-34t. The weight of the cassette varies depending on the range option, with the 11-30t option weighing 291g and the 11-34t option weighing 345g. The cassette is available in a silver color.
The Shimano Ultegra CS-R8101 12-Speed Cassette features a new tooth profile designed to work with both electronic and mechanical Shimano drivetrains. The tooth profile has been slightly changed to better accommodate mechanical shifting. This cassette is suitable for both Di2 and mechanical shifting systems. It offers a refined 12-step gear combination that provides peak efficiency and accelerating performance for every racing situation. The cassette provides faster, smoother shifts under maximum pedaling force. It is compatible with new 12-speed (HG-Spline-L2) and road 11-speed (HG-11) freehub bodies. The Shimano Ultegra CS-R8101 12-Speed Cassette is available in two range options: 11-30t and 11-34t. The weight of the cassette varies depending on the range option, with the 11-30t option weighing 291g and the 11-34t option weighing 345g. The cassette is available in a silver color.
in 19 offers
The lowest price for Shimano CS-R8101 Cassette Ultegra 12 Speed 11-30t right now is $77.44, compared across 16 retailers.
Shimano CS-R8101 Cassette Ultegra 12 Speed 11-30t
The Shimano Ultegra CS-R8101 12-Speed Cassette features a new tooth profile designed to work with both electronic and mechanical Shimano drivetrains. The tooth profile has been slightly changed to better accommodate mechanical shifting. This cassette is suitable for both Di2 and mechanical shifting systems. It offers a refined 12-step gear combination that provides peak efficiency and accelerating performance for every racing situation. The cassette provides faster, smoother shifts under maximum pedaling force. It is compatible with new 12-speed (HG-Spline-L2) and road 11-speed (HG-11) freehub bodies. The Shimano Ultegra CS-R8101 12-Speed Cassette is available in two range options: 11-30t and 11-34t. The weight of the cassette varies depending on the range option, with the 11-30t option weighing 291g and the 11-34t option weighing 345g. The cassette is available in a silver color.
The Shimano Ultegra CS-R8101 12-Speed Cassette features a new tooth profile designed to work with both electronic and mechanical Shimano drivetrains. The tooth profile has been slightly changed to better accommodate mechanical shifting. This cassette is suitable for both Di2 and mechanical shifting systems. It offers a refined 12-step gear combination that provides peak efficiency and accelerating performance for every racing situation. The cassette provides faster, smoother shifts under maximum pedaling force. It is compatible with new 12-speed (HG-Spline-L2) and road 11-speed (HG-11) freehub bodies. The Shimano Ultegra CS-R8101 12-Speed Cassette is available in two range options: 11-30t and 11-34t. The weight of the cassette varies depending on the range option, with the 11-30t option weighing 291g and the 11-34t option weighing 345g. The cassette is available in a silver color.
The all-time low was $77.44 on 5 Nov 2026. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 5 Nov 2026.
Last updated at 05/11/2026 02:35:49
SHIMANO ULTEGRA CS-R8101 12 Speed Cassette 11-30T 11-34T HG+ Road Gravel Bike Bicycle Freewheel
Free delivery between 12–18 Nov
Shimano Ultegra CS-R8101 12 Speed Cassette 11-30T
Shimano Ultegra DI2 12 Speed Cassette Sprocket~CS-R8101 11-30T
Delivery $36.15
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Delivery between 10–18 Nov $29
Shimano Ultegra R8100 12 Speed Cassette | New Era Cycle 11-30T
Delivery $20
CS-R8101 Cassette 11-30 Ultegra 12-Speed
Free delivery between 9–12 Nov
CS-R8101 Cassette 11-30 Ultegra 12 Speed
Shimano CS-R8101 Ultegra 12Spd 11-30T Cassette - JUST RIDE Nerang
Free delivery
Shimano Ultegra R8101 12spd 11-30 Cassette
Free delivery between 11–13 Nov
Shimano Ultegra 12Sp Cassette 11-30 CS-R8101-12
| Brand | Shimano |
SHIMANO ULTEGRA CS-R8101 12 Speed Cassette 11-30T 11-34T HG+ Road Gravel Bike Bicycle Freewheel
Free delivery between 12–18 Nov
Shimano Ultegra CS-R8101 12 Speed Cassette 11-30T
Shimano Ultegra DI2 12 Speed Cassette Sprocket~CS-R8101 11-30T
Delivery $36.15
Shimano CS -R8101 12spd 11-30
Delivery between 10–18 Nov $29
Shimano Ultegra R8100 12 Speed Cassette | New Era Cycle 11-30T
Delivery $20
| Brand | Shimano |
