You would have to dig deeper for derailleur information, but Campagnolo has a 12-30 cassette in 10sp Centaur and the biggest Campagnolo-compatible Miche is 29.The problem is - my buddy does NOT have SRAM. He has two bikes with standard 53-39 front rings. One is Campagnolo Centaur and one is Shimano Ultegra.
My question is: is there a 11-32 rear cluster/cassette and an accommodating rear derailleur solution for Campagnolo or Shimano in year 2013 ? Some sort of medium-cage rear derailleur perhaps?
The official Campagnolo web site - Bicycle Parts and Components Cycling
Componenti per Cicli, Ruote Bici da Corsa, Ruote MTB | Miche, Componenti per Cicli