Shimano Deore XT RT-MT800 Center Lock Disc Brake Rotor - Thunder Mountain Bikes
Shimano Deore XT RT-MT800 Center Lock Disc Brake Rotor - Thunder Mountain Bikes
Shimano Deore XT RT-MT800 Center Lock Disc Brake Rotor - Thunder Mountain Bikes
Shimano Deore XT RT-MT800 Center Lock Disc Brake Rotor - Thunder Mountain Bikes

Deore XT RT-MT800 Center Lock Disc Brake Rotor


Regular price Sale price$55.99
Shipping calculated at checkout.
  • Low stock - 2 items left
  • Backordered, shipping soon
  • Free shipping on all orders $59+

Shimano's Deore XT RT-MT800 compact and lightweight disc brake rotors feature rapid heat dissipation thanks to Ice Technologies Freeza heat management system. Installing and removing the rotors is quick and easy with Shimano's center lock design.


  • Model No: RT-MT800
  • Series: Deore XT M8100
  • Mount: Center lock
  • Sizes: 140mm, 160 mm, 180 mm, 203 mm
  • Weight: 88g (140 mm), 108g (160 mm), 132g (180 mm), 163g (203 mm)
  • Included lockring: Externally notched


  • Compatible with both metal and resin Shimano brake pads

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


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

Orders totaling over $59 are eligible to ship for free via an economy ground option of our choice.

Most bikes ship free within the continental US. Bike shipping to AK, HI, or PR is $250.

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.


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.

Component & Gear Returns

Returns 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.

Bike Returns

Returns or exchange requests for bikes must be requested by emailing us at 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.

Return Shipping

Customers may choose to use our provided flat-rate return shipping label at $9, or choose a carrier of their choice to handle their product return.

The $9 flat rate label will be deducted from the refund issued for the return. You can either print this label after requesting a return from the Order History in your Account profile, or you can request that we email you the label.

For all other return shipping methods, please email us at after submitting your return request so that we can confirm the shipping information you should use to return your item(s).


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.


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.


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

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.


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

(928) 282-1106   |

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Customer Reviews

Based on 4 reviews
Brian Toca
Fixed my spongy brakes

I bought a new Esker Elkat from Jenson in early 2021, but it was a vendor-specific build. Came with SLX 2 piston brakes in 180/160. It was always a bit spongy and I had to really clamp down to get any force out of them. All research just said yeah, the 2-piston SLXs are kinda spongy. So I purchased 203/180 set of XT rotors and some adapters, installed them, and while still kinda spongy, they now stop with authority. Love em

Keaton Yulo

great products, well delivered.

William Schiano
Fast service and exactly what I was looking for!

I was very pleased to find a much needed, and hard to find, XT brake rotor on Thunder Mountain Bike's website recently. The price was very reasonable and shipping was quick and smooth. I am very happy with the transaction and highly recommend Thunder Mountain Bikes! Thank you for having one of the only 160 XT rotors I could find anywhere online!

Bedrudin Kukuljevic
Great product

Awesome shop and store , they are the BEST . Very happy happy 😁

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