Campagnolo Centaur 11 Speed Rear Derailleur

The Campagnolo Centaur 2018 rear derailleur has been designed for cassettes with a 29 to 32T cog as its lightest gear. The new angle in relation to the cassette brings the chain closer to the cogs than ever before. The teeth on the top jockey wheel have been made longer while the lower jockey wheel uses shorter teeth. This causes smoother shifts and less friction on the chain when you're at extreme chain angles.

Skew derailleur hanger?
A problem that crops up often is a skew derailleur hanger. It can happen if the derailleur knocked into something, for example in the case of a fall on the bike. Luckily it can be fixed! You can read more here.

Clean the jockey wheels well too!
Just like the chain, the jockey wheels on a derailleur get super dirty. As a result the shifting is not as good and it does the lifespan of your derailleur no good. For that reason, it's a good idea to clean the jockey wheels at the same time when you clean and lube your chain. Do this by running a cloth along the jockey wheel while gently turning the chain. Of course it gets to a point where the jockey wheels are worn out. In this blog post you can find out more about when jockey wheels should be replaced and what you'll need.