Campagnolo Chorus 12-speed rear derailleur RD20-CH12

This derailleur works well provided (this was my case) to change the cable locking washer with 2 stainless washers, one normal and the other wider because the campa lock could only be fixed in one position which resulted in a significant angle between the cable exit and the derailleur. Result, several hours of struggle to find where the problem came from. The indexing was not good and I did not initially know if it was the derailleur or the new levers as well; So if you take this derailleur and have an indexing problem, change the lock and everything will fall into place. (Translated review)

You can tell it's Campagnolo as soon as you take it out of the box. Quality everywhere, very fine finishes and above all made in Italy. Very robust and hard springs, well-placed adjustment screws and 12-tooth pulleys. (Translated review)

Good functioning, but my previous Chorus 11v worked better, smoother. The new Record is too firm. Maybe due to the levers? (Translated review)

Exactly as expected from Campa, very beautiful material that works perfectly. (Translated review)