Shimano Deore XT CS-M8100 Cassette - 12-Speed - Thunder Mountain Bikes
Shimano Deore XT CS-M8100 Cassette - 12-Speed - Thunder Mountain Bikes

Deore XT CS-M8100 Cassette - 12-Speed

SKU: ICSM8100045

Regular price$164.99
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  • Low stock - 2 items left
  • Inventory on the way
  • Free shipping on all orders $49+

Shimano Deore XT CS-M8100 Cassette - 12-Speed

With its BEAM SPIDER construction, the new SHIMANO DEORE XT M8100 12-speed cassette shaves weight while increasing SHIMANO's MTB gearing range another gear. Using SHIMANO's new MICRO SPLINE freehub body and HYPERGLIDE+ tooth profile, these 10-45 and 10-51T cassettes deliver advanced shifting performance.

Details:

  • Definitive shifting performance
    • New shift ramp designs provide the fastest, smoothest shifts by HYPERGLIDE+
      • Beam Spider
    • Lighter and stiffer construction
    • Reduces cassette inertia resulting in faster acceleration and increased chain security
  • Micro Spline
    • 10T lowest sprocket realized by new FREEHUB body construction
  • Wide range and close step 12-speed drivetrain

Specs:

  • Cassette Cogs: 10-45t: 10-12-14-16-18-21-24-28-32-36-40-45
  • Cassette Cogs: 10-51t: 10-12-14-16-18-21-24-28-33-39-45-51
  • Compatible Chain: HG 12-SPEED
  • Series: XT
  • Generation: M8100
  • Number of Speeds: 12
  • Finish: Anodized
  • Weight: 10-45t: 461 grams
  • Weight: 10-51t: 470 grams

Please reach out to us with any questions you may have on anything we sell. We want to make sure you get the right part the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!

Shipping

We currently offer both economy and expedited shipping options though FedEX and USPS. 

Orders totaling over $49 are eligible to ship for free via an economy ground option of our choice. 

If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee and depending on your location. 

RETURNS

Should there be an issue with the item you bought, or you no longer need your purchase, we will be happy to set up a return.

Returns or exchange requests for New or Used Bikes must be requested by emailing us at sedona@thundermountainbikes.com within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes have a $200 restocking fee and the customer pays for return shipping.

Returns for most other items may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items installed or show wear of any kind. 

Clearance and open-box items may not be returned. 

RETURN PROCESS

To request a return, please log in to your customer account by clicking the  customer account icon  Profile icon in the top right of any page or visit account.thundermountainbikes.com

1. In the Email field, enter your email address and click Continue.

2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.

3. Go back to the online store and enter a six-digit verification code to log in.

4. Find and click on the order that you want to submit a return for.

5. If your order has more than one item, select only the items you want to return.

6. Select a return reason and add a note for the store if needed.

7. Click Request Return.

Once your return request is approved, you will receive an email with shipping instructions and a return shipping label. 

REFUNDS

We will process your return after we receive your returned item(s) and inspect the condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed.

EXCEPTIONS

If you receive defective or damaged products or if we sent you the wrong products, please contact us using the phone number or email below.

OTHER QUESTIONS?

If you have any questions concerning our return policy, please contact us at:

(928) 282-1106   |   sedona@thundermountainbikes.com

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Customer Reviews

Based on 3 reviews
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P
Paul Grosvenor
Works great

I installed the XT-8100 on my Bontrager Line pro carbon wheels. It was really easy to install and it shifts great.

T
Thomas Sweeney
Thanks Thunder Mountain

Cassette came fast. Great service. Works great.

K
Kyle Rhine
Amping!!

XT cassettes are back ordered on most, if not all online sites, not at Thunder!! When I need replacement parts I will look at Thunder first for now on!!