|Cassette Compatability||9 Speed|
|Pulley Cage Options||Long Cage,Medium Cage|
|Outer Plate||CNC'd 100% Carbon Outer Cage|
|Inner Plate||6061 Forged Aluminum|
|Weight||192g (Medium Cage)|
|Warranty||2 Year Manufacturer's Warranty|
I started riding with Sram went to Shimano and now back to Sram. The XO product is extremely precise, crisp and clean in it's shifting. I have been riding the XO product in a harsh environment since 2011 and have not even changed shifting cables. It still shifts clean, wet or dry.