For MTB gearing configurations
Weight: 258 g.
Chain bouncing can often cause noise as the chain slaps the top and bottom of the chain stay, or even derail from the front chain ring in extreme circumstances. The revolutionary Shadow Plus switch adds tension to the derailleur pulley spring to nearly eliminate chain slap and ghost shifting. When the Shadow Plus switch is in the 'off' position, the derailleur reacts like any other derailleur with a spring loaded lower pulley cage. However, when the switch is in the 'on' position, the pulley cage spring tension is significantly increased, effectively tightening the drivetrain. The derailleur should be ridden with the switch in the 'on' position all the time. The 'off' setting allows the shifting to be initially adjusted and makes it easier to remove the rear wheel.