The sprockets on the new 12-speed cassette are narrower for compatibility with existing 11-speed frames and free hubs. Campagnolo 12-speed Super Record groupset. photo: Campagnolo

The sprockets on the new 12-speed cassette are narrower for compatibility with existing 11-speed frames and free hubs. Campagnolo 12-speed Super Record groupset. photo: Campagnoloundefined