SRAM X.9 Trigger Shifters w/ X.9 Rear Derailleur COMBO 2012
Impulse 1:1® Actuation Ratio Technology for precise indexing and control. Integrated clamp design. Alloy body with composite lower cover, Stainless steel hardware. 9-Speed.
The new SRAM X.9 rear derailleur is stiffer, stronger and lighter. Features ESP 1:1 actuation ratio, front-facing adjustment screws, hollow mounting bolt, and more. It offers a built in curved cable router provides a smoother and more precise shifting.