Shimano XTR RD-M986 10spd Shadow Rear Derailleur: Dyna-Sys specific cable-pull for (HG-X) 10-speed mountain drivetrain compatibility. Shadow+ design: low profile body and bracket to avoid chainstay and obstacle contact, with stabilizer switch to reduce chain drop and slap. Direct mount frame compatible allowing easier removal of rear wheel

Top-Normal return spring optimized for RapidFire shifters. Composite body with carbon/alloy cage for impact protection and reduced weight. Wide link parallelogram design with 4 fluoric coated link pivot bushings increase rigidity while minimizing friction. Aluminum/Carbon/Composite construction with sealed bearing 11-tooth pulleys.