Originally Posted by khatfull

Yes, I find it annoying too. If you're gonna call it a full group in a modern sense I would expect: RD, FD, calipers, shifters, crank, chain, cassette. Things like headset, pedals, stem, seatpost, and hubs are so variable anyway...technically if those are available they should be included but generally those previous seven items are what I would consider a full group.

Vintage can be all over like in the case of Dura-Ace...stem, seatpost, etc. Does a full DA7400 group have to have the stem and seatpost?