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Shimano XT M786 Rear Derailleur

Item #: RD245A03
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USD$70.99 49% 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 32 reviews)

Ratings Distribution

  • 5 Stars

     

    (24)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (1)

90%

of respondents would recommend this to a friend.

Pros

  • Easy to install (22)
  • Durable (18)
  • Attractive (16)
  • Lightweight (11)
  • Quiet (3)

Cons

    Best Uses

    • Mountain biking (25)
    • Upgrade (8)
      • Reviewer Profile:
      • Avid cyclist (23), Competitive cyclist (4)
      • Was this a gift?:
      • No (28)

    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 32 customers

    Sort by

    Displaying reviews 1-10

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    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
         
        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
               
              5.0

              Excellent shifting, reasonable price

              By Jon

              from Denver, CO

              About Me Avid Cyclist

              Verified Buyer

              Pros

              • Durable
              • Easy To Install

              Cons

                Best Uses

                • Mountain Biking

                Comments about Shimano XT M786 Rear Derailleur:

                I've never had any issues with Shimano's XT derailleurs - they just take a licking and keep on shifting. I recently switched to a OneUp 1x10 setup (42t big cog) so bought the medium cage derailleur and replaced the outer cage plate with OneUp's RAD cage plate - that made shifting work extremely well even with the wider range gearing (11-42).

                • Was this a gift?:
                • No
                 
                5.0

                AWESOME

                By JOEPR09

                from Bayamon, PR

                About Me Avid Cyclist

                Verified Reviewer

                Pros

                • Attractive Design
                • Lightweight

                Cons

                  Best Uses

                  • Mountain Biking

                  Comments about Shimano XT M786 Rear Derailleur:

                  Has worked fantastic with a 1x10 setup without a chain guide. I paired this derailleur with a XT 11-36 cassette and a race face narrow wide 30T single ring. It has worked great, no chain drop and very quiet riding.

                  • Was this a gift?:
                  • No
                   
                  5.0

                  Awesome!

                  By Will: Future aspiring amatuer mtb racer

                  from Denver, CO

                  About Me Avid Cyclist

                  Verified Reviewer

                  Pros

                  • Adjustable Clutch
                  • Durable
                  • Easy To Install
                  • Quick Shifts

                  Cons

                    Best Uses

                    • All Mountainenduro
                    • Mountain Biking

                    Comments about Shimano XT M786 Rear Derailleur:

                    Very easy to set up, in ten minutes your back on your bike, schredding any trail you want.

                    • Was this a gift?:
                    • No

                    (0 of 1 customers found this review helpful)

                     
                    4.0

                    worth the upgrade for the clutch

                    By bryan

                    from port orange, fl

                    About Me Competitive Cyclist

                    Pros

                    • Attractive Design
                    • Durable
                    • Easy To Install
                    • Lightweight

                    Cons

                      Best Uses

                      • Racing

                      Comments about Shimano XT M786 Rear Derailleur:

                      Love the new clutch technology and very smooth shifting but only gave 4 stars because I prefer the stiffer sram shifting plus the x9 is a tad cheaper for comparable performance, but that is personal preference. The whole shimano line from SLX is all good stuff!!!

                      • Was this a gift?:
                      • No

                      Displaying reviews 1-10

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