Deore XT SL-M8100 Shift Lever
Deore XT SL-M8100 Shift Lever

Deore XT SL-M8100 Shift Lever


Regular price$62.99
Rear Speeds
  • Low stock - 2 items left
  • Inventory on the way
  • Free shipping on all orders $49+

Shimano's RapidFire Plus DEORE XT shift levers deliver light and responsive shifting for improved control out on the trail. The new I-SPEC EV lever offers a wide range of adjustments including increased lever slide range. Available in both I-SPEC-EV and 22.2mm clamp. Shimano Optislick derailleur cable included.


  • Model No: SL-M8100
  • Series: Deore XT M8100
  • Weight 117 grams (22.2mm Clamp), 120 grams (I-Spec EV)
  • Mount: 22.2mm bar clamp, I-SPEC EV
  • Max multiple shifts: 4
  • Rear speeds: 12
  • Shifter type: Rapidfire Plus


  • Rear derailleur: Shimano 12-speed rear derailleurs



    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!


    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. 


    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: and follow the steps to return eligible items from your order. 


    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.


    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:

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    Customer Reviews

    Based on 3 reviews
    Michael Rodacker
    Works great

    Easy install and it shifts well. Ordering through Thunder Mountain Bikes is easy and quick. One of my go to sites for MTB

    Tom L
    Excellent shifter!

    Fast shipping, no problems, excellent!

    Aaron Leighton
    Upshifting Options Worth the Upgrade over SLX

    Love the multi-shift option and Instant Release when upshifting. Definitely worth the upgrade in my opinion. Expected XT quality construction and nice paddle texture, too. I have the i-Spec version, which makes for an extra-clean looking bar setup.