The all-new Shimano Deore XT M8100 series of derailleurs brings a new level of drivetrain silence thanks to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANO's new 12-speed cassettes boosts range.
Details:
| CAGE LENGTH | SGS/Long |
| MAX FRONT DIFFERENCE | 0 |
| COLOR | SERIES COLOR |
| MOUNT | Direct attachment (conventional)/Direct mount compatible |
| TENSION PULLEY BEARING | Sealed Bearing |
| GUIDE PULLEY BEARING | Sealed Bearing |
| NUMBER OF PULLEY TEETH | 13 |
| SERIES | XT |
| GENERATION | M8100 |
| MAX LOW SPROCKET | 51t |
| MIN LOW SPROCKET | 45t |
| TOP NORMAL SPRING TYPE | Shimano Shadow RD+ |
| REAR SPEEDS | 12 |
| WEIGHT | 284 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.
All returns must be requested within sixty (60) days of the fulfillment date (i.e. the date we printed the shipping label and boxed up your order.) All returned items must be received in new and unused condition, with the original tags and labels attached, and in the original packaging. We cannot accept returns on any items that have been installed or show wear of any kind.
Return Process
To request a return, please visit: returns.thundermountainbikes.com and follow the steps to return eligible items from your order.
Refunds
After receiving your return and inspecting the condition of your item, we will process your return. Please allow at least seven (7) days from the receipt of your item to process your return or exchange. We will notify you by email when your return has been processed.
For all Special Order items, there is a 25% restocking fee. Special Order items are those that we do not currently stock.
Exceptions
For defective, damaged, 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:
