Originally Posted by
FBinNY
Since the advent of Hyperglide, or gated shifting, with it's cut down teeth which make shifting easier, chains have had to have peened rivets to prevent the plates from spreading when shifting. That's been 20 years or so, starting with 7 speed.
So all chains intended for 7s and more gears need to be closed with a master link or the special pin,
Nope. Campagnolo didn't switch to peened rivets until they introduced 10 speed chains in 2000. The C9 and no longer available 8 speed chains join just like they did on your old 10 speed when that meant 2 rings x 5 cogs.