Shimano XT RD-M786 Series Rear Derailleurs.


Dyna-Sys - Shimano's next generation 10-speed MTB drivetrain
Shimano presents the drivetrain technology for mountain bikes: DYNA-SYS. This revolutionary technology uses a 10-speed cassette, but that is not the only feature of this system. Highlight is a completely redesigned drivetrain that creates real added benefits for the rider.
It’s not only an extra gear…
It’s about closer gear ratios for a smoother shifting performance and improved power transfer
It’s about riding optimised gear combinations that improve efficiency and durability
It’s all about performance: DYNA-SYS offers a more stable drivetrain for any type of rider!

Shimano Shadow RD+ - Less distraction quiet drive train. Rear derailleur stabiliser reduces chain slap. Simple solution for chain drop. Lighter and more efficient than roller type chain device

HG-X Chain - Further evolution of shifting performance. A directional mountain bike specific 10-speed HG-X chain means smoother shifts, lighter weight and greater overall performance. HG-X directional chain: Outer side is optimized for front shifting and inner side is optimised for rear shifting.


Direct routing reduces the risk of snagging
Stronger return spring for more crisp shifting feeling
Bracket axle keeps the derailleur body from contacting the chainstay
Narrow profile
Mounts to derailleur hanger on frame
Shadow+ chain stabiliser provides a simple, lightweight chain control solution


Cage Length Long
Chain Wrap Capacity (teeth) 43 teeth
Colour Black
Drivetrain Speeds 10
Largest Cog (teeth) 36
Rear Der/Shifter Compatibility Shimano Mountain
Rear Derailleur Mount Type 10x1 Standard , Shimano Rear Direct Mount
Weight 266g

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