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Shimano CS-R8100 Ultegra 12-Speed Cassette

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The Shimano Ultegra R8100 12-speed cassette range provides uninterrupted shifting for climbing, sprinting, or cruising. Larger cogs maximize efficiency and allow compatibility with Shimano 11 and 12-speed FREEHUB bodies. HYPERGLIDE+ technology revolutionized off-road shifting, and now ULTEGRA CS-R8100 cassettes bring that same seamless shifting to road cycling. Riders can shift without losing speed, thanks to larger cogs and compatibility with existing HYPERGLIDE FREEHUB bodies, all while adding 12 gears to the drivetrain. The ULTEGRA CS-R8100 cassette is the new standard for road shifting.

Ready to experience the game-changing ULTEGRA R8100 12-speed cassette range from Shimano? Look no further than, North America's leading provider of Shimano road products. With their wide selection and top-notch service, you can trust to help you find the perfect ULTEGRA CS-R8100 cassette to take your road cycling to the next level. Don't wait to upgrade your ride - visit today and see the difference for yourself! Enjoy free shipping on all orders over $150.00.

HYPERGLIDE+ cassettes revolutionized off-road shifting with its seamless shifts both up and down the gear range. Now it's time for the technology to change road cycling. Even during maximal efforts up a climb or racing a friend, riders no longer need to back off to perform a shift. In any gear, Shimano ULTEGRA R8150 drivetrains maximize efficiency thanks to larger cogs and retain compatibility with existing HYPERGLIDE FREEHUB bodies. All this while increasing to 12-gears, ULTEGRA CS-R8100 cassettes are the new paradigm in road shifting.

  • The uninterrupted shifting experience of the Shimano Ultegra CS-R8100 12-speed cassette range lets you climb, sprint, or cruise without stopping to think about your next gear change. Larger driving cogs maximize drivetrain efficiency and create compatibility with both Shimano 11 and 12-speed freehub bodies. Shimano HYPERGLIDE+ technology is integrated to provide seamless shifts both up and down the gear range.
  • -Refined 12 step gear combination provides peak efficiency and accelerating performance for every racing situation
  • -Faster, smoother shifts under maximum pedaling force
  • -Compatible with 12-speed and road 11-speed freehub body
Return Policy

Please email for returns, defects or order issues. Do not contact our chat support.

Final Sale

Items marked Final Sale are not returnable for any reason.  If there is a problem with your order please send an email to

Our Policy

To provide our customers with the flexibility and confidence to shop online, our return policy is 30 days. If opened, items must be defective or unused, and returned with original undamaged packaging to be eligible for a refund. All returns must be pre-approved via our return centre before being shipped back to our warehouse or returned in person to our 2205 West 1st location in Vancouver. Refunds can take up to 7 days to process and are reflected on your method of payment. Refunds will only be issued once the product is received, inspected, and approved by our receiving team. The amount will be refunded to the original form of payment and, in some circumstances, we may charge a restocking fee or refund to store credit. The date on which you placed your order is used to determine the return time frame.

Returns, not exchanges.

We do not offer exchanges. If you are looking for another size or colour, place a new order through our website, and then visit our return centre.

Shipping and Fulfilment

Order Fulfilment, Delivery, and Local Pick-up:

In-stock orders will be ready for pickup within 24-48hrs. Please wait for confirmation email prior to pickup.

In-stock orders will be shipped within 24-48 hours of placement.

For local pick-up, we will contact you when your item is ready. Please bring a copy of your order confirmation and identification when you pick up your order.

Shimano CS-R8100 Ultegra 12-Speed Cassette