Campagnolo Xenon 10 Speed Alloy Rear Derailleur

The dimensions of the Xenon™ rear derailleur cage have been slightly modified in the 2008 range to interface with the 10v chainand#44; which is narrower than the 9v one. It is available in short and medium cage versionsand#44; depending on the drivetrain it will be used with.Weight : Short 253gm / Medium 258gm