Art and science come together to create Campagnolo's top of the line 10 speed rear derailleur. This medium cage rear derailleur will handle up to a 29t rear cog with a double crank.
Campagnolo have always made reliable, strong and beautifully crafted derailleurs. This carbon faced one for 03 does not disappoint in any way whatsoever, it performs as good as it looks and with the three size cages available most combinations of gears can be set up, all very well thought out by the guys in Italy. The only problem I have is with the cost of replacing the carbon part should you need to, try shelling out about 100 bucks for that little piece if you wish to replace it.