Campagnolo super record 11 speed rear derailleur cage for 2018 rear derailleurs. RD-SR002S is also the replacement for the record 11 speed post 2015 rear derailleurs.
Available for short cage RD-SR002S or medium cage RD-SR002M.
Short cage has capacity for a 11-29t cassette. The medium will allow the 11-32T. The medium shifts better with all cassette ranges.