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Shimano XT M786 Rear Derailleur

Item #: RD245A03
USD$89.99 36% off USD$139.99 msrp
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Featuring Shimano’s innovative Shadow clutch technology, the Deore XT rear derailleur is designed for today’s aggressive style of trail and all-mountain riding. By maintaining chain tension, the Shadow system eliminates chain slap and lowers the chances of dropping your chain. Other improvements include reduced noise and rotational drag as well as a low-profile pulley cage for better clearance over harsh terrain. Why choose an XT derailleur over a cheaper derailleur? Built for heavy duty and long life in demanding trail conditions, the XT's overall linkage is stiffer and has a more machined construction, increasing durability and stiffness, which also increases shift quality. The pulleys are also of a higher quality, and spin easier for less drivetrain drag. The whole derailleur is built to exacting standards and will last significantly longer than a cheaper derailleur as well.

Don't know which cage length to choose? Choose a long cage "SGS" derailleur if you have 3 chainrings on your crankset, and a medium cage "GS" if you have 2 or fewer front chainrings.

  • Compatible with 10 speed drivetrains
  • Uses Shadow derailleur clutch
  • Low profile pulley cage
  • Weight: 258g
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REVIEW SNAPSHOT®

by PowerReviews
Shimano XT M786 Rear Derailleur
 
4.6

(based on 36 reviews)

Ratings Distribution

  • 5 Stars

     

    (28)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (1)

91%

of respondents would recommend this to a friend.

Pros

  • Easy to install (25)
  • Durable (22)
  • Attractive (19)
  • Lightweight (12)
  • Quiet (3)

Cons

    Best Uses

    • Mountain biking (29)
    • Upgrade (10)
    • Racing (4)
      • Reviewer Profile:
      • Avid cyclist (25), Competitive cyclist (5), Casual/ recreational (3)
      • Was this a gift?:
      • No (32)

    Most Liked Positive Review

     

    Who knew what I was missing

    When I switched to the clutch on my Trek Remedy I did not have high expectations. I was running a tripple up front and was constantly dropping a chain. I fully expected I would...Read complete review

    When I switched to the clutch on my Trek Remedy I did not have high expectations. I was running a tripple up front and was constantly dropping a chain. I fully expected I would need a guide soon and though the clutch might quiet things down a bit. I totally underestimated the product as it not only silenced all chain slap but also prevented chain drop. I have no need to use a guide now and I will never run a MTB of any kind without a clutch derailleur. Further, I won't run a cross race without one either. This is a fantastic design that held up for me over several hundred miles.

    VS

    Most Liked Negative Review

     

    not usual shimano quality

    Installed to replace a non clutch XT mech (stick ripped apart the direct mount hanger), works well out of the box and shifts well. Unfortunately though, it seems to be made out...Read complete review

    Installed to replace a non clutch XT mech (stick ripped apart the direct mount hanger), works well out of the box and shifts well. Unfortunately though, it seems to be made out of cheese and could not survive a small knock which bent it to the point I cannot get lowest gear.

    Just simply not worth the money when you are paying for light weight materials that cannot take any knocks, it is mountain biking after all.

    All in all, 4 months of bliss, should be at least 4 years.

    Reviewed by 36 customers

    Sort by

    Displaying reviews 1-10

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    5.0

    Reliable RD

    By Hopper Bunny

    from Santa Clarita, CA

    About Me Avid Cyclist

    Verified Buyer

    Pros

    • Durable
    • Easy To Install

    Cons

      Best Uses

      • Mountain Biking

      Comments about Shimano XT M786 Rear Derailleur:

      I wiped out some time ago and destroyed my RD. Decided to use shimano instead of the other S brand. Boy was this a big upgrade in performance and also a big down grade in price. Shifting is without hesitation, very smooth. Im running this on a 1x10 with WT 42T and RF 32t.

      • Was this a gift?:
      • No
       
      5.0

      Great Derailleur

      By Happy Trails

      from SLC

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Attractive Design
      • Durable

      Cons

        Best Uses

        • Mountain Biking

        Comments about Shimano XT M786 Rear Derailleur:

        Only had a few rides but the clutch system seems to keep everything tight! Great product!

        • Was this a gift?:
        • No
         
        5.0

        Consistent performer

        By Stevo

        from Austin TX

        About Me Avid Cyclist

        Verified Buyer

        Pros

        • Attractive Design
        • Durable
        • Easy To Install
        • Lightweight

        Cons

          Best Uses

          • Mountain Biking
          • Racing
          • Upgrade

          Comments about Shimano XT M786 Rear Derailleur:

          as expected for a XT product. clean, quick, precise, and the clutch is the best thing to happen to derailleurs in years.

          • Was this a gift?:
          • No
           
          5.0

          Expected Shimano quality delivered again

          By BK Deluxe

          from Ann Arbor, MI

          About Me Competitive Cyclist

          Verified Buyer

          Pros

          • Attractive Design
          • Clutch Mechanism
          • Durable
          • Easy To Install

          Cons

            Best Uses

            • Mountain Biking
            • Racing
            • Upgrade

            Comments about Shimano XT M786 Rear Derailleur:

            I bought this derailleur to set a mountain bike up as a 1x10 with a narrow wide chainring and so far have been very pleased with the results! I have taken the bike on several rides, and have really enjoyed improved shifting performance and have yet to experience a chain drop (knock on wood). If you're looking at this product, you probably know that XT is one of the industry standards in balancing quality, performance, and durability; this derailleur is no exception!

            • Was this a gift?:
            • No
             
            5.0

            XT - says it all

            By tio pablito

            from GA

            About Me Avid Cyclist

            Verified Buyer

            Pros

            • Attractive Design
            • Durable
            • Easy To Install
            • Lightweight

            Cons

              Best Uses

              • Mountain Biking
              • Road Biking
              • Upgrade

              Comments about Shimano XT M786 Rear Derailleur:

              XT line is as good as it gets short of the slight weight savings with XTR. This was part of a 3x9 to 3x10 upgrade to my urban warrior (Giant Trance MTB adapted for hostile pavement) - that's why I rated mountain components good for road use - lots of roadies eat my dust. Lockout tension completely eliminates chain looseness. Teamed with KMC DLC chain, XT shifters, and XTR cassette pulls smoothly and shifts are crisp and immediate - very nice!

              • Was this a gift?:
              • No
               
              3.0

              not usual shimano quality

              By neil on the rocks

              from toronto, canada

              About Me Avid Cyclist

              Verified Reviewer

              Pros

              • Attractive Design
              • Easy To Install
              • Lightweight

              Cons

              • Fragile

              Best Uses

              • Casual Riding

              Comments about Shimano XT M786 Rear Derailleur:

              Installed to replace a non clutch XT mech (stick ripped apart the direct mount hanger), works well out of the box and shifts well. Unfortunately though, it seems to be made out of cheese and could not survive a small knock which bent it to the point I cannot get lowest gear.

              Just simply not worth the money when you are paying for light weight materials that cannot take any knocks, it is mountain biking after all.

              All in all, 4 months of bliss, should be at least 4 years.

              • Was this a gift?:
              • No
               
              5.0

              Butter smooth

              By Raven859

              from USAF, Germany

              About Me Avid Cyclist

              Verified Buyer

              Pros

              • Attractive Design
              • Durable
              • Easy To Install
              • Flawless
              • Lightweight

              Cons

                Best Uses

                • Mountain Biking

                Comments about Shimano XT M786 Rear Derailleur:

                Building a custom salsa Mamasita and this is a great upgrade. Works perfectly.

                • Was this a gift?:
                • No

                (0 of 1 customers found this review helpful)

                 
                5.0

                Love it!

                By JakeC

                from Austin, TX

                About Me Avid Cyclist

                Verified Reviewer

                Pros

                • Attractive Design
                • Durable

                Cons

                  Best Uses

                  • Mountain Biking

                  Comments about Shimano XT M786 Rear Derailleur:

                  Great derailleur with solid feel and low hanger to minimize impacts on obstacles. Also like the clutch that limits chain slap and helps keep the chain from coming off.

                  • Was this a gift?:
                  • No

                  (1 of 1 customers found this review helpful)

                   
                  4.0

                  Swithced to Shadow Plus for 1x10

                  By J in Advance

                  from Advance, NC

                  About Me Avid Cyclist

                  Verified Buyer

                  Pros

                  • Durable
                  • Easy To Install

                  Cons

                    Best Uses

                    • Mountain Biking
                    • Upgrade

                    Comments about Shimano XT M786 Rear Derailleur:

                    Converted from 3x10 to 1x10 and switched to clutch medium cage RD. Rode the bike pre clutch for several weeks with a few chain drops. So far with Shadow Plus clutch no drops. This RD is truly as smooth and quiet as the other reviews claim. Very nice added benefit.

                    • Was this a gift?:
                    • No
                     
                    5.0

                    no more chain slap

                    By Montana Biker

                    from The mountains of Montana

                    About Me Avid Cyclist

                    Verified Buyer

                    Pros

                    • Quiet

                    Cons

                      Best Uses

                      • Mountain Biking

                      Comments about Shimano XT M786 Rear Derailleur:

                      After a stick ate my last non-clutch derailleur, I bought this one. I'm pretty used to shifting in big-big on the downhills to avoid chain slap. With the clutch, I don't have to do that anymore. Nice and quiet.

                      • Was this a gift?:
                      • No

                      Displaying reviews 1-10

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