April 14 2011 | Print Print Page
SHIMANO XTR SHADOW PLUS derailleur for trail usage
A new addition to the SHIMANO XTR Dyna-Sys drivetrain is the RD-M985 SHADOW
PLUS rear derailleur. It features a switch at the pulley cage to enforce a heavier
spring tension and activate a friction stabilizer to counteract the forces of up and
down chain momentum in rough terrain.

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 switch when selected to the “ON” position dampens the cage and consequent
chain movement for a nearly silent and stable riding experience. In the “OFF”
position it eases the installation and removal of the rear wheel by relaxing the spring
tension of the cage.

Availability in the market: June 2011