The SHIMANO SHADOW+ technology in the RD-M986 offers more stability by increasing the spring tension through a switch and activating a stabilizer which fixes the cage through increased friction and thus reduces the impact of the chain even in the most demanding terrain.
This not only eliminates noise but also effectively prevents the chain from jumping off.
Shadow-Plus technology with stabiliser
The rear derailleur stabilizer reduces the impact and prevents the chain from jumping off.
Sealed bearing pulleys. Less friction in the pulley bearing means less loss of force.
lighter and more efficient than roller chain devices
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