Yeah, may not be exactly what you are talking about, but a few days ago I just replaced my first modern chain (Shimano 105 Chain). I say modern b/c of getting back on the bike last yr after 13 yr hiatus, I was only used to changing the old Sedis, or Sachs chains that were bi-directional chains. As per the instructions of the new 105 chain, I had to be sure that I installed it in the correct direction (stamped lettering on links righ-side-up when viewing bike from dirve-train side).