REI

From extreme freeriding to the rigors of World Cup XC, the SRAM X.O system performs with distinction.
- Features a potent mix of high-grade metals (forged aluminum and titanium and reinforced carbon composite), advanced engineering and smart design
- Direct Route Technology (Di.R.T.) is light, responsive and precise and impervious to cable housing damage
- With Zero Loss Travelâ„¢ the shifting pawl is always engaged for instant shifting response
- Sealed-bearing pulleys seal out dirt and water while maintaining ultrasmooth pulley action
- 1:1® actuation ratio ensures precise shifting and control
- Outside facing limit screws
- Compatible with SRAM 1:1 shifters (triggers and twisters)
- Handles 8- and 9-speed drivetrains with ease
Jenson USA (2006)

Just when you thought it couldn't be better, SRAM steps it up with the '06 release of their proven X.0 rear derailleur. This is SRAM's lightest, smoothest, and most advanced design.
Features:
- Forged alloy links and B-knuckle, heat-treated pivot pins
- Handles 8 or 9 speed drivetrainsR10g (long cage), 197g (mid cage), and 192g (short cage)
- Sealed cartridge bearing pulleys for durability
- Weight-saving carbon cage on short/mid cages, CNC machined alloy on long cage model
- Works with SRAM ESP 1:1 ratio shifters only (X.0, X.9, X.7, and other 'ESP' units)